I have found that Skritter is testing my knowledge of tons of bizzare, rarely used kanji and marking them as "rare". How can I make it stop wasting my time with rare kanji? What's most weird is that these are in the official Skritter JLPT lists!

Some examples:
此処　ここ
何処　どこ
何方　どなた
其れ　それ
此れ　これ

You can choose to not study rare kanji by changing your study settings.

account > study settings > uncheck the box that says "Study Rare Kanji"

Wow, thank you very much! I thought the only settings were the ones from the gear on the study page.

I've just grinned and beared it up till now...learned some fun kanji. (薔薇, etc)