I think it's a good idea to have a RR Wiki. It will help people out and then the community can then contribute to the wiki by adding stuff with their experiences :)
Am i wrong when i say that there were plans for this? I just seem to remember some post about it long time ago.
There are 2 wiki's for RR
http://runerebels.wikia.com/wiki/Main_Page
http://runerebel.wikia.com/wiki/Main_Page
None have been modified in over 8 months. I'd suggest just using 2007 wiki's since everything they have is about 95% the same