This document summarizes and demonstrates free, easy-to-use social networking tools for classroom use, including blogging, RSS feeds, podcasting, wikis, Skype, social bookmarking, photo sharing, and their educational applications. Examples of social bookmarking sites mentioned are Delicious and Furl. Blogs, wikis, and podcasts can be created through free services like Blogger, WordPress, and Audacity. Flickr and RSS readers are discussed for photo sharing and managing information feeds.