We are probably losing out on a mess of traffic, but the only popups (or in our case, DHTML ad) we use are to advertise our own site features. As well, it is 100% configurable by campaign_id if the Affiliate wishes to turn it on/off (without affecting how much he'll get paid!)
For example, at the moment our float-over features our Mobile service. You can clearly see it links to the join page though while
keeping the affiliates' id intact
On the inside of the site, we've had
very minimal-to-none upsells (the few times we did it was only for complimentary products for our members like sex toys and herbal). Our only current upsell is to
IwantU Live and on that note, we will soon be offering it as a new site for affiliates to promote - so everyone would earn a generous PPS $ on it
We have paid all our affiliates since 1997. Sure there are mixups that happen once in awhile, but in the end
everyone always gets paid (weekly at that!).
If you haven't already, give us a shot; I think you'll be glad you did.
http://affiliates.iwantu.com