I've just had to cancel my Visa because of some fraudulent taxi charges appearing, and am without one for up to 6 business days. I do however, have a bunch of dough sitting in my paypal account.
My question is, if I link my paypal acct up to FB for the next few days, then remove it when the new Visa comes in... will there be remnants of the paypal info left behind if I was to get the FB account banned in the future, or does it get totally wiped when I remove paypal as a billing source.
short answer is yes
the one time google confuses me 
Yes to what part?
there will be traces I think