Slightly related: students learn a lot because of having a crush on someone. I've learned a bunch of things this way too. It's not something that can be structurally exploited, though.
If you're motivated to learn in order to impress a potential mate, rev that seems like something that might rely reduce - in part - to seeing sexual stimulation? That element might be exploitable, there may even be a way to do that morally?
rely -> really
seeing -> seeking
Perhaps a small volume of typo corrections could be allowed as edits for longer than the normal edit period.
I wonder how you made this one :). Mobile?
As for exploiting this, or a bunch of other "nonstandard" sources of motivation, I worry in practice about what I personally call "educational games problem" - both teens and adults quickly notice when all you're doing is sprinkle some artificial "fun" on top of the same old drudgery. They're not tricked by it. It's the education part, not motivation part, that has to be secondary and sneaked in, for the whole thing to work. That's why you can get 12-yo to study undergrad-level physics as a side effect of Kerbal Space Program - they naturally learn to get better at the activity they find intrinsically rewarding.