I am not sure about it, but I think you can use analytics for that. I read an article about it these days that explained more about how to track a visitor, on what partener links he click....

Thanks Dks

Analytics only shows which page a visitor is leaving from. I would like to know which links they are clicking on when leaving a site

What do you think of this one fantomas trackerJack (TM): Track visitors leaving your site - 2007-11-14

I haven't checked it yet, maybe later I can give you my opinion also..

Thanks Dks