Hi,
I thought i'd let you all know about Legends of cosrin, its a RP based MUD based in a fantisy/medievil (sorry about spelling) MUD. Its built on a game engine that is totaly unique other than one other MUD run by the same company.

It has level based training with Build points, a monks, rogues, fighters and mages guild, within each of those if further sub-guilds.

The RP is mainly clan and guild based, there no PK but there is a dueling system invented by players. Mostly conflicts are solved by RP.

It has a great message board system as well, with LOADS of RP posts, unfortunately there down for maintence right now.

Check it out.