MOOC, this time in Portuguese (yes, I'll do it in English again; in the meantime, take a look at this.) What you may not know is that we created social media communities for these courses. They are open to anybody.
In case you're interested, here's the Facebook group, which has 3,260 English-speaking members already, and the Google+ group, with nearly 600. This one is for Portuguese-speaking people only.