Search for other Role-Playing worlds in SL

I've been spending some time lately (much to the anger and spite of my last landlady) in the Gorean City of Treve, an excellent example of a role-player's haven. But as enjoyable to role-play there is, it can get boring after a while. I'd like a little more variety in my role-playing activities and I wonder where else I can go that would have as a complete setting and strict role-playing rules as Gor.

I'd also like to get involved in projects that would help create complete role-play worlds like Gor.