There's a listing in Check my Listing that does NOT adhere to:
Prosper has instituted a minimum credit score requirement of 640 to request a loan from Prosper’s lenders as well as a bid floor.
Apparently if you have a previous loan, the minimum credit score requirement is NOT 640. In fact, you can be an "E" rated borrower with lower than 640.
(didn't post a link to the listing since this is in the lobby)