Has anyone taken a course from Coursera or Edx ?

Coursera: https://www.coursera.org/
Edx: https://www.edx.org/

I'm just starting a Coursera networked Life course to see how things pan out and how I like the experience.

I have done a few bits on Microsoft's training site previously.
https://www.microsoftvirtualacademy.com/Home.aspx