Flickr – one of the best online photo management and sharing application in the world. Show off your favorite photos to the world, securely and privately show photos to your friends and family, or blog the photos you take with a cameraphone. 

Photobucket – is most popular site on the Internet for uploading, sharing, linking and finding photos, videos, and graphics. Photobucket’s free albums store thousands of photos and hours of video. Photobucket offers free tools for making slide shows of photos, videos and music, and users can share their media with friends by email, IM and mobile phone. Plus, users browse through Photobucket’s huge online library of photos and videos to find the latest most popular user generated content.

Smugmug – easily create online photo albums. Share, store, organize and print.

Slide.com – lets you use photos and other digital content to publish and discover the people and things that matter to you. With a super easy set-up, clean interface and multiple transition and theme options, Slide is among the most popular tools for self expression available on the web today. Slide can be embedded onto any website, viewed on your desktop or shared with your friends or fans.

Imageshack – is an intuitive and easy-to-use free media hosting service. It can be used to upload images, flash files, and movies, and share them with friends using any imaginable means.

Webshots – provides you with a variety of ways to enjoy photos and videos. Free and premium memberships with tons of storage you’ll never run out. Share photos, videos and slide shows on Webshots and your personal website, download professional photos in Webshots Pro Shots. Access Webshots on the go with Webshots Mobile, Easily manage your online photos with the free Webshots Desktop.

Bayimg – is a place where you can host all your images. Bayimg do not censor them. You can upload about 140 different formats. There’s even support for .RAR and .ZIP-archives! If you upload an archive with multiple images, you’ll also get an album-address for all the pictures inside of it. Tags are separated by spaces, removal code is a password to let you remove images you upload.

Pbase – free image hosting.