I was wondering, there are plenty of paid blogging services recently (payperpost.com, sponsoredreviews.com, reviewme.com, etc) what platforms do they use, and does anyone know how and where they get started, programing-wise? can it be very very very very customized wordpress platform, or its not secure enough for payments? i know it's a very general and amateurish question, but i'd really appreciate if anyone can give me a general direction at least. Thanks!