Hide unwanted notifications and applications from News Feeds in Facebook

I've been doing this for ages now with a greasemonkey script I found.. <a href="http://steeev.freehostia.com/wp/2009/03/19/facebook_purity_cleans_up_the_facebook_homepage/" rel="nofollow">http://steeev.freehostia.com/wp/2009/03/19/facebook_purity_c...</a>

Hide all unwanted applications like mafia wars, farmville, became a fan of, joined a group.