The Rocky Horror Wiki is a comprehensive compilation of Rocky Horror information.
From the Main Page...
"This site is owned and maintained by The Rocky Horror Preservation Foundation. It was created for the stars of Rocky Horror, and no I don't mean just the people who were in the movie. It's for the people who have been so dedicated to the Rocky Horror community that it has kept this movie playing for 40+ years. It's for the fans. Anyone is welcome to add to this wiki. Add yourself. Add your cast. This is the same engine as Wikipedia, so if you know how to do something there it will work here as well. Let's watch this thing grow. Oh.. and be cool, don't be a dick here." - Cosmo
http://www.rockyhorrorwiki.org/