This guy makes some good points:
When confronted with the realtime web’s constant flow of incoming information, who has time for a full set of facts? We each take a few seconds to consider a one hundred forty character blurb and then hammer out our reactions by way of a Tweet or status update.
That model works for some incoming data. I only need a few seconds to come up with my official response to much of what is shared by way of the realtime web: Farmville update (hide), Foursquare Check-in (ignore), Mel Gibson tape (email link to Rabbi), Kid in a watermelon (retweet).
Other news and information doesn’t necessarily fit into the new instant-response model. But as everything merges into a single stream, it’s getting more difficult to turn off the reflex and the sense of urgency long enough to identify the data that requires a little more consideration.
I think politics had a little more to do with the Sherrod debacle than he does, but it’s telling that nobody embraces the ADHD Twitter culture more than online journalists.