Since FS-FBO opened its doors in early March, there has been a steady increase in FS enthusiasts around the world signing up. If you have not joined, I would encourage you to do so – it is 100% free. Features include a photo gallery, mini-blogs, forums, and member profiles.
There is a new (or relatively new) community site focusing on flight simulation called FS-FBO managed by FSGenesis developer Justin Tyme. Justin is using PHPizabi‘s social networking platform, which seems to be gaining in popularity worldwide.