This may come from email messages as much as Web. That means personal use, not just official Web pages on kiosks.
Good discussion takes a lot of preparation.
Just because people live in the same place doesn't mean they have shared interests beyond the basics. Think communities of interest and of practice. Recognise the Internet extends people's reach. Local communities are a mass of different communities. While community and voluntary organisations are very important as sources of information and help, they are not 'the community'.