Sometimes, I notice that some very odd username is listed on Home as having earned the "Autobiographer" badge, where by "odd" I mean something very much non-mathematical and intrinsically spammy, such as this account. Invariably, the "About me" section turns out to be spam, actually. Is there any way to report such accounts? I can't see a "flag this user" button on the user page.
I've tried destroying a few accounts with spammy profiles, and it takes less than 30 seconds to do each one. However, looking through the list of "autobiographer" badge recipients, I would guess we have over 5000 such accounts, and I'm not particularly inclined to repeat this process 5000 times.
Based on this discussion at Meta.SE, it seems the official policy is to do nothing until they post actual spam beyond their profiles.