"Weakest Words" doesn't include my actual weakest words?
Maybe the algorithm just needs some tuning, but I feel that the way "practice weakest words" selects my words is a bit erratic. It almost never pulls in the words I've learned recently and I need to actually go into the lesson (ie V. Pres. 1) to practice the newer terms I've learned that I'm actually weak with.
I find that the deeper into the lessons I get the better duolingo is at letting me practice the newer words. Especially if you follow the stared lesson plan instead of mastering one lesson at a time. My problem is that sometimes you don't see a word for over a month and I can forget it.