Social community thoughts

Someone asked me today how I would so a social community differently than locating on a specialist platform like Blogtronix as currently. And thinking about it what I might suggest is to make a community using WordPress, hosted by someone good like PressHarbor for support issues having tested them out with my own blog, and then take value advantage of both the development skills of the PressHarbor team, as well as the wider WordPress community to kick ass. I know Moveable Type’s latest version is moving that way (“Blogging is getting social + social networking is fragmenting. Means niched sites attracting more visitors, with more qualified audiences”) in terms so I’m guessing its pretty much the same with WordPress right?