Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Flickr - image and video hosting website
Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
Photobucket - Photobucket offers image hosting and free photo and video sharing.
LibriVox - free public domain audiobooks