That is a great question, I just realized there's a missing button for that! I'll delete your account manually, and for folks in the future, I'll make sure I have a system in place to handle it. I'm sorry about that!!
Just so everyone else knows, there is now an option within your profile to delete your account. This will delete your username, email, and any logs that would have been associated with your account instantly. From my testing, it will retain your posts, but no username or signature will be attached. If you want your posts deleted in addition, please email me directly, and I'll get those removed for you. I'll update the privacy policy to reflect this!