It's certainly an interesting phenomenon. We've seen the roots of this kind of thing (flash mobs and the like) already, but something on this scale is definitely new.

There's an old adage I recall reading once... "The Press will only be truly Free when everyone owns one." Well, these days, everyone does. And some of them use it. It's kind of like the way a riot starts, with people talking back and forth, sometimes getting things wrong, making poor or incorrect assumptions, until it all snowballs into spontaneous action and violence...

--
Of all the tyrannies, a tyranny exercised for the good of its victims may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end, for they do so with the approval of their own conscience.
-- C.S. Lewis