The best plugin for tracking the Google Analytics events (clicks on my affiliate links) that I know is the plugin Google Analytics by Yoast. It can nicely track clicks on your website if you have masked affiliate links (e.g. yoursite.com/out/hostgator), so you just enter "/out/" in the plugin settings and you can then track these clicks as events in your G Analytics account. However, this plugin does not work on my particular website on which I need it (there probably is a plugin conflict with an other plugin). Do you know any good alternative WP plugin to track the events?