It is not just the providers who need to be careful with this.  One false click of the mouse by a hobbyist and he can possibly expose his hobby activities to all his "friends" or even the public on Facebook.  This is a real risk if you do not log out of Facebook after each use.  Click the Facebook link on an Eros ad and have the ad appear on your personal Facebook wall, I guarantee somebody is going to get burnt by this.  

I know more providers and hobbyists have "hobby" Facebook accounts now, but I think it is a big risk for both to have those links on Eros.