The Modeling wiki has been updated to gear up for a larger modeling community, and anyone thats interested should apply for membership.
Hopefully as more people join we'll be able to get a pretty good modeling community going. FG, just like any other game, will require lots of content so we need lots of help. If you decide to join just look around the site and read the various pages and you should find lots of info on how things should work.
Just be aware, however, that anyone who joins to help is doing just that: joining to help. Although you can upload models to the site freely, the FG devs have the right to pick and choose from these models which ones to use, so the inclusion of your models within the game is not guaranteed. Although once uploaded the FG team has the majority of the control over your content, be assured however that you will be credited in-game if your model is used.