Like anything else in life Facebook can be whatever you make of it, the group of friends I’ve got talk more crap and post some or the funniest stuff every day,I never get involved in the politics. 
There are lots of Facebook pagesthat are very helpful,my favorite are some of the sawmill related pages,I’ve seen lots of people asking for help on them and much like agtalk the knowledge is so vast it’s unreal.Some of the individuals on Facebook you can do without but the groups I’m on are all good ones.
Good place to buy and sell stuff too.