Lately it seems like everyone on Twitter is dropping the ball. Too little chatter and too much "living" of "lives." So we ran a very scientific survey and discovered that, yes, basically everyone missed their numbers this month. The shamed:

Dropping off their Twittering this summer are such familiar Twitterti as music writer Touré; Air America snarker Ana Marie Cox; New York Times Oscar obsessive David Carr; Times "conceptual scoop" artist Jennifer 8. Lee; celebrity journalism diva Bonnie Fuller; Yahoo vlogger Sarah Lacy and Digg perpetrator Kevin Rose. See the chart above, assembled with help from tweetstats.com (until we melted their servers by asking for numbers on Times Twitterer-in-Chief Brian Stelter).

Summer vacations could well be playing a role; Carr went on a bike trip to Colombia this month, Rose was inspecting tea in remote parts of China. But that would seem the ideal time to use Twitter, which lets you talk to all your friends back home at once, without much time commitment, and even to share pictures and videos with services like TwitPic. Maybe media and tech types have Twitter firmly slotted into the "work" category and don't want to touch it much on break.

There are some outliers: Salon's Joan Walsh, whose been on a cable-news punditry tear, has spiked her Twittering; the New Yorker's Susan Orlean has been manically chronicling her animal obsession in recent weeks; and Kurt Andersen got a burst of posts out of his trip to the White House. Everyone else should hop to and follow their examples; what else can America export to save its useless circle-jerk of an economy, if not narcissistic navel-gazing media?