Forum Moderators: skibum
The pop-under is your page so that gets people to your site. If you have a banner on your with a 3:2 arrangement, you'll get another 66,667 banner displays. If you have some buttons or towers on the page you can get even more.
Perhaps others can suggest companies they have actual experience with.
I really don't know anything about exitcity but it is a starting point.
On the other hand, I used to make my own popups and promote on topic affiliate programs with them. It is very easy to do, and you have control of everything. I made much more than the CPM figures popup brokers offered. You can also use a simple cookie script to popup only one ad per visit.
I personally would avoid the pop ups.
I had a quick look at your site. It looks like you could include some themed CD, DVD, Video and Book links in reasonably easily and I think these could be made to work well with your site's content.
Amazon is probably your best bet for an affiliate programme with some simple deep linking to these kind of products. My other thought is ring tones - but I'm not sure which affiliates offer a commission on these.
Jube