Re:No signature = No liability (Score 2, Informative)

This is a great point, checking accounts are different beasts alltogether. I setup a completely seperate checking account at a different bank from my personal one for Paypal transactions only. It works because, yes it has the potential of being hacked, but they aren't privy to access my other primary accounts which pays my mortgage. If a customer has a rather large transaction I always do money orders.