WTF are they?

exactly !

they're a feature on OKCupid

Ah right.

you answer questions (thousands if you like) and mark what you'd like your ideal match to answer.

on people's profile you get to see the matching percentages, but not their answers to individual questions.

unless you ask for a WTF report

then you can see what you answered, what they answered, what you would want them to answer, and what they would want you to answer.

and the 'damage done' when you, or they, didn't the 'correct' answer.

hmm sounds like a lot of work

I actually think it's big fun. I also like the tests one can take.

her profile ...

if you were reading mine, I've just changed a whole bunch of them. My old answers no longer apply.