Although PayPal did not specify why the service was banned, it follows the recent news that iPredator's credit card processor Payson has stopped doing business with all VPN services.
"It's not a coincidence that we are banned from Payson, and then PayPal a few weeks after," noted Sunde.
PayPal has long taken a hard stance against BitTorrent sites, Usenet providers and cyberlockers but today's news may suggest that VPNs are now on the list.
Perhaps worse for the site is the fact that other credit card processors do not appear to be coming forward to take Payson's place: "One processor we talked with, to replace Payson, told us that we were on a blacklist of services that are prohibited to accept credit cards. This apparently happened shortly after Payson announced it could no longer process MasterCard and Visa payments for VPN providers," Sunde explained (via TF).
iPredator still accepts BitCoins.