How badly do you want to delete everything? There might be easier options, but if there aren't I can certainly cook up a mass-deletion script. Just, I don't want to test it on my own account so you'd need to let me access yours.
(Yes, I could make a test account for the purpose. That would be more work.)
EDIT: I got a little way into implementing this before [deleted] bade me stop, thus the spate of retracted comments. Hopefully ve'll change ver mind, as some of those comments were quite interesting; however, this has gotten me thinking. The site has a comment deletion option, but not if you're deleting your account entirely; should it have that? If we don't want people to do use it, but still leave the scripting option open, am I expected not to use that option?
You might perhaps like to edit out the username from this comment now.
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