Photo Sharing

Zorpia - Zorpia is like Myspace with some more photo features, you can upload you photos and share them on your profile.
Clickfriends -Document your life with your own digital photo essay, then share it with friends and family through ClickFriends.com. Now you can have the same site take care of your online photo albums and your Facebook or MySpace photo albums. Just upload your photos to the ClickFriends site, and then have them exported to your profile on your preferred social networking site. It´s free and easy to sign up.
Snappages - Snappages.com provides space for you to save and organize your photos, your online friends from virtual communities, and your events in one well-designed web page. It combines various web concepts, including online storage, file sharing, and Facebook-style friend communication.
Photorgy - Photorgy is photo uploading/sharing tool which works with AIM. Photo albums can be shared and owned by any number of friends, family members, and colleagues.
SlideShare - SlideShare is a content sharing site where you can host and display presentations. Maybe you would use it to show your professional work, or just for personal photo sharing, power point presentations about your latest entrepreneurial idea, or graphics you designed.
Zoomandgo - Contribute your travel photos, videos, or general advice to the Zoom and Go site, and they will reward you with cash. The site has a system of points which can be awarded to the content you submit according to what kind of content it is (written reviews receive less then photos, and videos receive the most).
Zooomr - Store, share, sort, sell, and search all your photos and those of other users at Zooomr. Users can post comments on individual pictures, therefore, gaining feedback on the photo, as well as gaining insight into the other photographers who use the site. Photos can be shared for free, or can be sold through the site.
BurstCast - Burstcast offers space for you to upload pics from your camera phone either by MMS or by e-mail, right from the phone. On the site, you can choose for your photos to be made public and shown on the home page (but it´s either all or nothing; you can´t have some photos be public and some private).
Mostrips - The photo sharing site is designed to let you create albums to be easily shared on mobile phones. It´s a useful way to send work if you are a photographer, or a head shot if you are a model or actor. Or it can just be a fun way to share photos from your vacations among friends and family.
DPhoto - DPhoto is a photo sharing service which offers well-designed graphics and a professional appearance. With DPhoto you can share your photos with friends and family in an ad-free, secure site.
Invitr - Invitr is a Flickr related application which simply extends your sharing capabilities. With Invitr you can share your Flickr photos with non-Flickr members; so photos that have been categorized as private can now be sent and shared with anyone you choose.
DigitalRailroad - Digital Railroad is aimed at aiding professional photographers connect with more fans and even help them connect to content providers and media companies who are looking to buy their work.
ContakMe - Contakme is a new site where you can upload an unlimited number of photos, create albums, and rate other people´s photos.
Flickr - The most popular photo sharing site. Upload photos, create sets and join one of the greatest communities of professional and unprofessional photographers.
Picasa - Google’s answer to photo sharing. The main application is a download, but there are also web albums.

Free Photo Hosting

Photobucket - one of the most popular image hosting services around, favorite amongst MySpace users. Makes it very easy to post your images to social networking sites; gives you 25 GB of monthly traffic and 1 GB of storage with images themselves being up to 1 MB in size.
ImageShack - The most popular image hosting service. Upload images up to 1.5 MB and embed them in any web page.
AllYouCanUpload- There is no limit to the image size you can upload. You can also upload up to three images in the same time.
ImageHosting - Upload multiple pictures at one time. The maximum filesize you can upload depends on what account you registered.
TinyPic - Upload pictures and videos and embed them anywhere. The direct link for your picture or video will be tiny (e.g. http://tinypic.com/1)
TheImageHosting - Upload multiple images at once and zipped image files. Maximum file size allowed is 1 MB.
BayImg - Free uncensored image hosting provided by the Pirate Bay. The max file upload size is 100MB and you can can upload about 140 different formats.
XS.to - Upload your images and embed them anywhere. You can also delete images you previously uploaded. Max file size allowed is 2.5 MB.
ImgPlace - Upload up to five images at one time. Maximum file size allowed is 1.5 MB
FreeImageHosting.net - Register to host your images for free. Maximum file size is 3,000 KB.
FileHigh - The free “Economy” account lets you upload up to three images simultaneously and the maximum size for each file is 512 KB.
VillagePhotos - Upload pictures straight from your browser and host them online. 1 GB monthly data transfer.
ImageVenue - You can upload up to five images in the same moment. The maximum file size allowed is 1.5 MB.
ImageCross - Free MySpace image hosting. You can upload images up to 2 MB in size.
SmugMug - SmugMug is a photo uploader, editor, and community portal all in one. You can upload and share your photos, then store the photos with up to four backup copies of each photo in three varying states.

Photography Blogs

Digital-Photography-School - Darren Rowse’s photo tips.
Thomas Hawk - Zooomr’s Thomas Hawk on photography, Zooomr, Flickr and general tech news.
PhotoCritic - A site for photography criticism, with the intention of allowing photographers to critique each others’ work and share opinions, suggestions, and professional tips.
FlickrBlog - While it’s not exclusively a photo blog, but from time to time the Flickr staff will pick a few photos and feature them on the blog and the users see this as a big honor.
DPreview - practically the only resource you’ll ever need for digital cameras; incredibly in-depth and timely reviews of most models available on the market
Shutterlog - some great photos here with attention to detail.
Chromasia - no words, only great photos
Stuck In Customs - blog by one of the greatest DRM photographers on the net
Black and White Photography - great photo blog focusing on B&W photos.

Mashups

Flappr - A slick Flash-based Flickr interface that lets you do most of the actions you can do on Flickr.
FlickrVision - displays Flickr updates from various users on a Google Map.
Retrievr - an unbelievable mashup that delivers photos based on your drawings.
Flickr Logo Maker - Turns any text into a Flickr-style logo.
Spell with Flickr - this tool enables you to write text in letters based off Flickr images. Not all that useful but fun.
Tagnautica - a slightly weird visual way to browse through Flickr images.
Captioner - adds comic-style captions to your images.
Fastr - a “guess that tag” style game; you are presented with a series of images and you must guess their common tag.
PictureSandbox - Searches the Flickr archive (as well as that of YouTube and some other sites) based on the type of license; great tool for finding images you can actually use in a project
FlickrFling - presents an RSS feed through Flickr images. Completely useless but works as a fun experiment.
Colr Pickr - One of the most useful Flickr Mashups; enables you to search Flickr photos based on their color. Works surprisingly well.
FlickrBall - a six-degrees-of-separation scavenger-hunt game (yes, Kevin Bacon is mentioned), using Flickr thumbnails and tags for clues.
Photo Tag Mashup - Retrieves a number of Flickr images in a simple interface based on a tag you provide
Flickr Sudoku - a Sudoku game based on Flickr images.

Mobile

SnapZone - An online service that lets you upload your photos directly from your mobile via a wireless connection. Snapzone allows you to free up space on your phone”s memory while also giving you an instantaneous way to share your images with friends. SnapZone is also a community site, so if your friends join you can use it to share your pictures easily in one place.
Fotochatter - network that enables you to share mobile pictures with your friends, as well as receive images from your buddies on your phone
Radar - creates picture conversations - you send your pictures to Radar and your friends can instantly see them and comment on them
Shozu - Mobile uploading to photo sites including Flickr.

Photo Mixing and Slideshows

Slide - create slideshows easily and embed them on your site or social networking profile.
RockYou - offers several free services, including slideshow creation, photo hosting, photo enhancement and more.
Scrapblog - An online service that lets you upload your photos from many of the popular photo sharing websites and mash them up with hundreds of stickers, shapes, text and YouTube videos to create a digital scrapbook
Vuvox - Vuvox lets you create online animated and interactive slideshows using a range of effects, theme templates and designs
Mixercast - Mixercast lets you mashup your photos and movies into animated, interactive slide shows and throws in ag ood library of stock photo, video and licensed music to use as a soundtrack
Flektor - Flektor has a great set of tools for adding transitions, text, stickers, effects and overlays into movies made out of your photos and online videos

Photo Printing/Book Creation

Snapfish - Snapfish is run by HP, they let you store and share your photos for free, and prints are cheap with highest quality at 12¢ each. You can also have things like mugs and cards made with your pictures on them.
Fotki - A photo-sharing and hosting site, you can share you photos with others or use it with your blog. It has some unique features like FTP access, and users can choose to sell their photos. There is an integrated printing service that lets you print at many different sizes at good prices.
KodakGallery - Kodak Gallery is owned by Kodak (no surprise there), like the other they let you store and share photos and then make prints and have custom gifts made.
Shutterfly - Shutterfly not only lets you store and share photos and then have them printed, you can also pic up your prints right at Target stores.
Moo - Moo currently has partnerships with many social networks including Flickr, Vox, and Bebo, you can print small minicards and notecards with the photos you have uploaded to these sites.

Photo Search

PicSearch - image search with some interesting options; for example, you can choose to search only black and white or color photos.
YotoFoto - a search engine which claims to be indexing over a quarter million Creative Commons, Public Domain, GNU FDL, and various other ‘copyleft’ images.
Google Image Search - a resource so commonly used it doesn’t need a special explanation; still one of the best ways to find images of any kind on the web.
Pixsy - Image search engine that’s striking a lot of partnerships. Also provides PixsyPower, a custom video and photo search for your own site.
StockPhotoFinder - a search engine specialized in finding stock photos.
EveryStockPhoto - this site is indexing over 1 million completely free photos from various sources.

Stock Photos

iStockPhoto - royalty-free images for low prices; there aren’t any completely free photos here, but photo quality is above average
Fotolia - Another cheap royalty-free image provider, with nearly 2 million photos in stock
SXC.hu - one of the best (and biggest) repositories of completely free stock photography on the net.
MorgueFile - provides completely free photos; no registration required to download.
PixelPerfectDigital - 5000+ free stock photos
StockXpert - the commercial arm of Stock Xchange; offers cheap but quality royalty-free material
Alamy - Alamy is a search engine for stock photos which boasts millions of images from thousands of photographers, picture agencies and national collections. The site does the editing and classification of the images.