Has Paypal defined WAHBO? There are a number of private business concerns that do offer “business opportunities” for people to carry on “work at home” — which in turn often has a pyramidesque component for evangelizing the opportunities to others. If customized Facebook software counts, could it be because said software also self-advertises “if you would like to use this software too, please click”? It might be the pyramidesque element that Paypal is shying away from.
I think you’re more than right about that. I’m feeling a little fried.