WP Click Info (wp-click-info) free WordPress plugin

Counts User Clicks on all external links via Ajax. This plugin needs no annoying and irritating redirect Page to count the Clicks of your external links.
By default all external links will become the target=”_blank” attribute and a nice Wiki Like Image via CSS to visualize your visitors that this is an external link.

In addition there are top reports available in the administration area.
Top Target urls, Top Referrer urls, Top Target by Referrer, Top Referrer by Target and a Top 10 Targets report in the Dashboard.