The Social Media Classroom is a new project started by Howard Rheingold which offers an open-source Drupal-based web service to teachers and students for the purpose of introducing social media into the classroom. The service includes tools like forums, blogs, wikis, chat, social bookmarking, RSS, microblogging, widgets, video conferencing, and more.
In the short time that I have used it, Twitter has grown quickly to play a major part in the way that I interact with fellow colleagues and professionals from around the world.
Anne O'Tate: A tool to support user-driven summarization, drill-down and browsing of PubMed search results. Journal of Biomedical Discovery and Collaboration
How are blogfolios different from e-Portfolios? They aren't exactly, they're more of a subset of e-Portfolios, or another way of looking at the traditional e-Portfolio.
Though it may seem like everything has an RSS feed nowadays, lots of sites still lack the feature. Fortunately, there's Dapper: The Data Mapper, a web service that will take information from a site and package it in the form of your choice.
Reader's friend list comes from the list of people you can chat with on Google Talk or Gmail chat. To invite friends to see your Reader shared items, simply invite them to chat. To remove them, delete them from your Gmail contacts, or from your Talk list.