Imgur is a free and simple image hosting service with image editing feature. Signup is optional. Imgur is pronounced like image-er; imager.
Online social photo and short video sharing community. Flickr helps you organize that huge mass of photos you have and offers a way for you, your friends and family to tell stories about them.
500px lets you create stunning professional photo portfolios, find friends, express yourself and connect with likeminded people.
Provides free image upload and hosting integration for forums. Free picture hosting and photo sharing for websites and blogs.
Photobucket offers image hosting and free photo and video sharing. Images can be organized into albums. Up to 2GB is available as a free starting, the lowest paid plan give 52 GB plus many other plans
ImgPile is the best place to share and enjoy the most awesome images on the Internet. Every day, people use ImgPile to be entertained and inspired by funny, heartwarming and helpful images and stories from all around the world.
Free image hosting and sharing service, upload pictures, photo host. Offers integration solutions for uploading images to forums. 16 MB limit. Direct image links, BBCode and HTML thumbnails.
Picinfinity is an image retaining/proxy site. Basically, you upload your image and the site keeps your image alive forever by ensuring that the image has redundant locations that it's uploaded to.