leafgreen - 6:02 am on Nov 4, 2010 (gmt 0)

I've had a long relationship with Linkshare. Very quickly, the big pro is that they have the top two or three collections of retail affiliate programs. That's their specialty.
Disadv? Their website does take a bit getting used to. They're using a legacy system that goes back to literally when I started with them in 2003 or so. But they do have substantial capabilities. Try RTFM. seriously. There's plenty of reading to do to learn. They have just as many tools and api's as cj.