Deleting accounts

I've been inundated with accounts which have registered here -- and set themselves to be notified when I post. The problem? A lot of the accounts are spammers (how???) and they are giving fake/false emails, which are bringing my mail server to its knees.

I'm going through and deleting accounts. If I don't recognize it or don't see *any* post activity (i.e. a comment), the account is getting deleted. If this hits you and you really weren't a spammer, I'm truly sorry. Right now, I can't finesse this.