The visitors are conducive to high conversion, as the sites are very commercial in nature (see Rusbiz | Global E-commerce Network | Web Store & Buy/Sell Solutions.).
Quite a few people have approached me for advertising on these sites.
I'm looking to set up a custom ad system through which I can facilitate my advertisers with statistics and whatnot.
My sites do not use a CMS platform (or a CMS at all for that matter, we edit the PHP directly)
Can anyone suggest any software (or general course of action) that might help me?