Nothing, It just stays theyre unless someone has you e-mail and password
Facebook will never "Die" but it will become unpopular at a time.
you brush it and you get its fur.
facebook returns to the old photo-viewing system.
Your facebook profile can now become your ever-lasting presence in this world. On October 2009 Facebook chief security officer announced it will memorialize the profiles of its deceased users. Once a user is confirmed dead, Facebook keeps his wall active for friends and family to keep posting, for the sake of showing respect and love. You may use a facebook application named "If I Die", where you can instruct your friends what to do with your account, AND - create a legacy video!
your acount is deleted\
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Then you dont ave one
Facebook.
Your Facebook account won't shut down!! You just need to keep on Facebook a lot or you will loose it forever!
They are gone as well.
That means you delete your friend
Your account will be gone, but if you had pictures on there, Facebook will still have them (I'm pretty sure about this because MySpace does it).