AutoLinker for vBulletin

For the past few months I've been developing an AutoLinker plugin for vBulletin. For the uninitiated, autolinkers are those little tools that display a pop-over window when you mouse-over certain keywords. Here's an example:

example of vbulletin autolinker from autolinker.com

Often autolinkers are used for advertising purposes, but that's far from the only use: some people use them to display informative messages for users - explanations of acronyms or jargon, displaying images relating to keywords etc

Our autolinker is called AutoLinker and is available from http://www.autolinker.com. It works with vBulletin forum 3.7 and later (including 4.x), and the vBulletin CMS.