I'm a an old Hero Quest player (first edition) and a fan of forge influenced games (whichever this expression means to you, in italian I would make a lot more distinctions :) ).
I've never played Other Worlds but I've read it and I've found it intersting. I plan to play it in the near future.
Anyway I'm not here to speak about rules or settings this time but about "promotion".
Probably Other Worlds has not so many follower as other games like Fate, Dungeon World or Burning Wheel (obviously I don't have data about that, it's only my impression) but I think this community could have more members.
I think "advertising" it on thye g+ page of story games (and also on the forum) would probably result in more members and more sharings in the circles of people intersted in rpg. And maybe you could make a post also at rpg.net or other similar sites (some pages in reddit for example).
Maybe no other people will join the community but I think that the cost of a post or two is not so high (or as we say in italian withan idiomatic expression of medieval origin: the game it's worth the candle!)