One problem with free games is that there is so many of them, and the good ones get lost in the quagmire of the dross (I count my games in the latter mainly I'm afraid). People rave about the latest commercial games, and magazines only review games that you have to pay for. I find this really frustrating and annoying. Why do people ignore all the stuff that's free?
What was needed was somewhere where they are reviewed and rated, and I've finally come across it - the Freegamer blog. Now people have got no excuse for not playing quality free games like Tremulous.