I am Sithis and I have just joined UESP to help with info on Oblivion. :)
Check out The Black Hand Forums here---> http://www.tbhf.us.tc
These forums are for The Black Hand and Dark Brotherhood fans.
Also check out my Oblivion Roleplaying Forums---> http://z10.invisionfree.com/elderscrollsroleplay
There is Oblivion roleplay and other video game roleplay.