What's your problem? And why aren't you tweeting about it? Today, everyone from John Lithgow to Peter Kafka joined the bitterati in airing their gripes.

Dow Jones subcontractor Peter Kafka bitched about his commute.

Greensboro News & Record editor John Robinson bitched about PR people.

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Space-alien actor John Lithgow bitched about the New York Times.

Macworld editor Jason Snell bitched about Bruce Springsteen's Super Bowl set.

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NowPublic news director Rachel Nixon bitched about Twidiots and their Tweologisms.

Anyone else's tweets we should keep an eye on? Send us more Twitter usernames, please.