I just found out this month Paypal has with their system to help not only themselves but also those who are sending products out (like the place I work for). We had a new over demanding client that promised his funds were avalible, after about 4 days of almost harassment calls we got a call from a Paypal rep that informed us the person was on their 'watch list', seems he had attempted this many times over with at least a dozen companies world wide.