Hey! my other website that I have been working on with a friend for a long time is finally live today; Virbex.
It is a fansite/blog about virtual worlds. We have information pages on a bunch of free worlds/online games, a big resources list, and some guidance for running them on Linux & Mac where possible (if there is no official support). We will be adding to these much more over time!
There's also two blogs, one is mostly off the cuff first impressions trying out new worlds/games, the other is for longer more detailed posts (which will be less frequent)
Check it out if you are interested!