Knowing that I can makes me more likely not to, actually. How do I do it if I want to? (Please don't say "Just contact us"!)

Sorry, but for now this is not 100% self-service. Once you're logged in, just submit the feedback text field with something like 'please delete my account' and I'll be sure and know exactly which a/c to delete. It should be deleted in a few hours at most.

Noooooooooooooooo :-)