we have been online for 10 years now, never changed the linkingcodes and we even credit you for memberarea upsells.
Also I'm pretty much always available on icq or email so if you have question you'll get a decent fast reply.
We also run several freesites so we know how annoying it can be to deal with sponsors that don't reply
www.payserve.com if you have any questions feel free to drop me a message!