Useful tools

I've already begun to incorporate some of the tools we're using here in my work. I need to develop an online course so using Blackboard here, actually being a student and using it, is helpful in thinking about how to approach that task. Also, PBwiki. I've been a user but suddenly I've got tons of wikis and am using them to both collaborate and to organize projects. And I'm using this blog thing, which I've resisted!