I don't have FB, used to but lost interest in it. I joined some car forums about the same time that I cancelled my FB account (around 2010). Keep in mind I've got nothing against FB, the wife uses it and I find its great for certain things, but I think that forums have what I'm looking for in terms of technical info, people I want to socialize with etc... This is the first modeling forum that I joined and I'm amazed at the skill of many members of this forum, great place to learn and share our creations.
PS: I have to add this is one of the most pleasant forums I take part in, members are polite, respectful and like to help one another, which is a nice change.