I use Anki too, but probably not as much. IMO Anki is a tool for memorizing things, not learning them. You don't make a card for anything you don't already understand.

Don't get me wrong, I think memorization is still useful for things like Haskell. You already have to have learned the concepts, but Anki helps you migrate what you've learned to a part of your brain where you just know them, no extra conscious effort required. Eventually this has to happen with what you already know if you are going to tackle bigger concepts, Anki just streamlines it.