I have had incredible success with this in languages for grammar rules and vocabulary, as well as for literary-courses. But except for some basic integration rules, I have a hard time using Anki for math courses. What kind of cards did you create?

And since he comes up regularly on HN: Cal Newports Stealth Studying[1] is really efficient in an Anki deck

[1] http://calnewport.com/blog/2007/10/03/the-art-of-stealth-stu...