The problem with PTR programs are the low payout
essentially.
The rate goes something like one cent for one mail, and they send u
few mails per day. In the end, u can only collect ur money after
probably 1000 mail or something, which goes around $10 or
so....
This is roughly the basic. But even with the reference schemes, its
still puny.
Crappy thing, i give up after sometime..