The downside of Facebook as a public space: Censorship has a critical point for all of us. Facebook, Twitter et al are corporate entities and have their own corporate ethics. This can result in outcomes we might see as negative (c.f. taking down pages in error).
When our government information is filtered by Facebook (note the contrast to the government filtering Facebook) and our pages can be blocked maliciously, where will we turn?
I guess that’s why I blog first and then feed out to Facebook and Twitter and the like. That way I get the reach and easy communication with my friends where they want to read, but I also retain control of my stuff.
Of course, my web hosting company is also a company with its own ethics, but I can move my blog over to another host very easily. I can’t do the same with Facebook or Twitter. I own raggett.net and all underneath it. I absolutely don’t own facebook.com/tomraggett.