New Yorkers often fester in silence when they encounter rude subway behavior – the man who saunters up the left side of the stairs during rush hour, the woman who files her nails in the seat next to you, the kid who sings out loud to his iPod.But Brooklyn comedian Tom Sibley doesn't let public transit offenders off so easy. He targets them with his camera phone.Sibley's blog, Subway Douchery, exposes subway riders who violate the understood rules of public transportation, by plastering their pictures on the Web. The blog's popularity has exploded in the past three months. But not everyone is a fan.While some applaud Sibley's nod to common courtesy, others say he's violating his targets' privacy. Less