I actually don't post often myself any more. When I do I just drop it where the best match seems to be. Sometimes it gets responses, sometimes it doesn't. I'll usually get some responses from my followers regardless, though.

I don't know how old you are, but if you are older than millennial generation then Silver Bloggers is a nice community. They accept a variety, so if I can't find a niche community I'll put it there.

Gems is a catch all, but I don't know if there is much of a community atmosphere there.