It has the potential to be a useful resource for keeping posted on neighborhood events and happenings but unfortunately attracts too many dysfunctional busybodies who have way too much time on their hands.
Endless rants and complaining from bitter hateful people about the most trivial things with nasty and mean spirited insults back and forth. It discourages participation or involvement in even the most benign topics of discussion like "if you're not picking up your dogs poo after it goes in the grass you are a vile^%*#^*^& horrible person not worthy of the air you breath." It's scary to read some of the comments of people who "want to pass laws" to persecute those who don't agree with them. (God forbid you bring up anything remotely related to politics or religion!) So, it ends up being a magnet for opinionated self appointed "geniuses" who bully the dissenters right off the platform.
Normal, balanced people with a life will have little time for this soap box.