I mostly lurk.
It gets interesting sometimes. There are several FB groups for framers and many people are on them. Sometimes they are just gripe sessions and sometimes there is very good information. I wish we could get them to post on here instead but I think it is the instant posting and they do not have to "think" about what they post. More of an off hand forum. Of course this is just my opinion and there some that will disagree.
FC is easier to search when you are looking for something, FB not so much.