This document discusses using various social software tools for instruction purposes. It summarizes the pros and cons of blogs, wikis, Facebook, and social bookmarking. Blogs are good for timely and static content but difficult to organize across subjects. Wikis are better for multi-subject support and easy to update but not as good for timely content. Facebook is where students already are but requires HTML knowledge. Social bookmarking allows content reuse across pages but relies on third parties. The document recommends having a maintenance and marketing plan, and promoting the tools during instruction.