To drop the nuclear bomb on your Facebook account and obliterate it for good, you have to use Facebook's "Delete My Account" form and submit a special request.
With that request, Facebook promises that it will permanently remove all of your data. Mostly. The site does add this caveat: "Copies of some material (photos, notes, etc.) may remain in our servers for technical reasons, but this material is disassociated from any personal identifiers and completely inaccessible to other people using Facebook."
As Facebook's Ticker delves into social sharing, its new features walk the privacy line.
