Ok, this may sound silly, but you asked for it.
One of the strengths I see in the RM System is that is "models life better than other games". With this I mean that rules seem more logical, and many times I've joked with my friend about how some situations could be interpreted as RM fumbles, criticals, skill difficulties, etc.
So maybe there could be a section where people could for example tell how a TV show or a movie would map to RM (any version, or even a comparative between how a combat scene might be resolved under RM2, RMFRP, RMU). This, if it where to have visibility outside the forum and could be found via google searches (I'm thinking your new blog may be of use in this respect), could help create the idea of using RM for any kind of adventures.