I've seen this idea played out to its logical conclusion with a site a few years back. What happened was essentially what you see on local news websites: A smal

I've seen this idea played out to its logical conclusion with a site a few years back. What happened was essentially what you see on local news websites: A small, bitchy community was created and provided no value to anyone. I'm sure there are ways to mitigate that behavior with smarter design and administration, so better luck to these guys.