weve got one for my mam and dad and sister (and my mam has just added gf to it) which is fine, mostly functional. at the moment its primarily updates about mam and dads dogs failing health 
theres also a wider fb chat for my dads side of the family as theyre spread out all over rather than being mostly manchester based like my mams. weve started going camping for a wknd with them every year so it was started as a way of facilitating that but i muted the living shit out of it almost immediately as theyre the gobshitey welsh side, endless chatter and loads of stupid minion stickers and stuff. i think they mainly do it coz they know it winds me up now which, you know, fair dos