Wow, look at all those comments ... while there was a fair amount of humorous slagging off in there, I think the result of the collective musings is this: If you're genuinely blogging, then who cares what platform you're using? You should be on the blogroll.
So that will be The Manchizzle's totally democratic policy henceforth. If you know of anyone in the general vicinity of Manc who's blogging on MSN Spaces, livejournal etc. or social networking thingies like myspace, or Friendster (can you blog on Friendster? Does anyone still use that?) send 'em my way.