Face Reviews: How do users spend time on Facebook? *("Interaction with Facebook Profiles, Photos and Applications are the 3 most common activities....It is important to note that facebook photos is the the biggest photo sharing site on the internet.")

Read/Write Web: The Structured Web, A Primer. ("Among the evolving aspects of the new web are Semantics, Attention (Implicit Behavior) and Personalization. Regardless of what we are decide to call this next web, the information in it is going to be more meaningful, more automatic, and more tailored to each of us.")

Planblog: Wiki Meets Facebook

Beth Kanter: How Nonprofits can use social media--If you're an NGO, start here.