The apotheosis of the ADD society

So after checking out Twitter and using it maybe three times before deciding it was totally pointless (as though modern politics in general and "Mr. Hip" Jim Tedisco in particular aren't superficial enough), I've come to wonder: do we really need another medium entirely devoted enabling people with attention spans of 10 seconds or less?

I realize that people with attention spans of 10 seconds or less represent a very large potential market here in the United States, but is reading Facebook status messages really so taxing for such people that they need something shorter?