Target now has a simple forum allowing visitors to comment on the website or the product, ask questions and so on. It's not intended to compete with the heavyweights and at present doesn't even require a login. It uses a Captcha to prevent abuse by robots but apart from that it's up to the moderator to catch offensive posts and delete them.
The same code will shortly be added to the downloadable demo so that website builders can add it to their sites. Watch this blog for updates.
The forum isn't quite complete yet; the keyword search hasn't yet been tested as there aren't enough posts to make it feasible to do so.