There’s a social media web site that is community-focused called NextDoor.com.
I used to recommend NextDoor as a resource for Rio Crossing residents. Unfortunately, one of the board members went on a rampage at a board meeting, and then continued his rant online there at NextDoor. Things got ugly, and while there is still some good information there, I don’t really recommend it as a good resource… but if you’re willing to separate the good from the bad, it does have some good information now and then.