Id say drop them (even if its Condom Cash LOL) you can always merge your accounts if the sponsor uses CCBill so you can choose another CCBill based sponsor and hit payout through your account that way.

I drop sponsors all the time and after 3-6 months ill give them another try, it might not be that the sites arent converting across the board, it could just be that your traffic at the time is more interested in another niche.

I had a guy a few weeks back ask me why he wasnt converting on Geisha Guys as well as his other sponsors, when i asked him where he was getting the traffic from, and what other sponsors he was promoting, it became evident that the site he chose wasnt the 'sensible' one to choose.. All his traffic and other sponsors were/was jock and straight boy orientated.

If its a PPS sponsor that handles their own payments, you should email them and explain that you want to close your account out and can they send you whatever is owed to you. Some will do that, some wont, depends on the sponsor.

Bottom line is this, you are doing this to make money, if a sponsor isnt converting for you, swap them out for a few months then give them another try.

Regards,

Lee