I've tried hunting a few times over the years for a Freelancer Facebook group as it seems wrong that such a great classic of a game doesn't have a proper presence on social media. Doesn't help that the word 'freelancer' brings up a gazillion other unrelated groups in the fb search box lol!
I found a post at the starport mentioning 2 groups but the link is dead and I can't find any trace of the other one they mention.
The Starport - A Freelancer Game Fansite :: Freelancer joins Facebook... again! - Freelancer Community News - News
So in the end I decided to make my own as over the years I've created groups for other ageing classic like Starflight, Master of Magic, and Sid Meier's Colonization which have been going quite well and have grown into nice little communities. You can find it here:
If there are indeed some existing Freelancer FB groups please let me know where they are so I can join. If there's some really big good ones out there that I've failed to find then I'll get rid of mine as they'll be no need for it!