I've certainly done left and rejoined before. I worry that Group moderators might not allow me back in (either they stop accepting new members or get annoyed at

I've certainly done left and rejoined before. I worry that Group moderators might not allow me back in (either they stop accepting new members or get annoyed at someone for jumping in and out). Also, there is some friction with joining Groups. Group owners ask filter questions and delay admissions by days. You can "unfollow" groups, but that requires a few clicks. FB groups are the best way for me to find roommate-style housing. "{city|country} expat" Groups help me plan my travels and answer questions. I don't know of other platforms that provide this service for me at low costs.