ValePTR

http://valeptr.com/pages/index.php?refid=lonelyangeluk

CharmedEmail

http://charmed-email.com/pages/index.php?refid=lonelyangeluk

DonkeyMails

http://www.donkeymails.com/pages/index.php?refid=lonelyangeluk

HomesteadMails

I'm no longer a member here, not for bad reasons just because I had to get rid of a few sites to save me some time :) Renee is an honest owner and I'm still a member of 3 of her other sites!

CatHouseMails

http://cathousemails.com/pages/index.php?refid=lonelyangeluk

3BearsPTR

http://www.3bearsptr.com/pages/index.php?refid=lonelyangeluk

RainingCashEmails

http://www.rainingcashemails.com/pages/index.php?refid=lonelyangeluk

SwagBucks

http://www.swagbucks.com/refer/lonelyangeluk
This isn't a PTR site, you make "swagbucks" by participating in surveys, clicking emails, watching videos. Swagbucks are converted in the swagstore. I've earned a PayPal giftcard (below) and also a £5 Amazon voucher (other countries available not just UK). They do lots of vouchers (and other things) e.g. Starbucks, JCpenny. Mostly US stores as they are an American Company.