Camcontacts, IMlive and Ifriends require a lot more information if the viewer spends a lot of money.
IMlive and Camcontacts require the viewers to fax in documents if they want to spend more then $100 with a particular CC.
I require copied of A gov't issued photo ID and the CC with a signature authorization.
Here's a link to the form Camcontacts requires: Very similar to what imlive and ifriends require
http://www.camcontacts.net/Privileged.asp