I don't know if this link will actually work- I'm trying to bookmark #organellewars because this brilliant teacher set up a way for his students to collaborate with real scientists who work on organelles. Together the scientists and students collaborate via twitter. The conversations are amazing. If nothing else, put #organellewars in a Twitter search.
This is actually a blog that shows what Kim Cofino has been able to do internationally with student collaborations and student- produced projects that involve social media or other web 2.0 tools.