So I clicked the screen and then hit space. See, clicking the screen selects the browser's page, and then space will scroll down--as opposed to, say, switching between tabs, or some other weird funky shit.

Except I was in my message center, and while clicking the screen I just happened to have my cursor hovering over "flag as spam". Oops! Before my mind processed what I'd done, I hit space, which on a dialogue box is "enter". And a dialogue box had popped up, asking me if I was SURE I wanted to flag the comment as spam--which could have been a nice feature/safeguard, except the default option is "why, yes, thanks for asking, I DO want to flag this comment as spam, I certainly didn't hit the button by accident!"

Frown town.