I joined the Pinterest bandwagon. I was holding out given I already have a flood of web 2.0 services pouring onto my screen daily. But after signing up for this bad boy and figuring out a specific use, I am a fan.
My goal with Pinterest is to store project based learning (PBL) resources I find on the web. You will find some introductory stuff like Best Practices and Organizations, and the rest of the resources I have are categorized by topics such as robotics and biomimicry. Good place to find project ideas and I will be adding to it over time.