Are you Tweeting Too Hard? Making a Tweethead of yourself?

Peter Serafinowicz, an actor, says there's a perfectly good explanation for his tweet — "Went to the gym this morning. As I left, everyone said I was the best!" — an observation that earned him a spot on the site's all-time-worst list. "At my local gym, most of the guys (losers) are jealous of me, as (I don't wish to boast) I'm in great shape. I'm pretty sure that they call me names when I'm not around," he wrote in an e-mail.

SHOOT: To separate the wit from the daft.

clipped from www.time.com Maybe the trendy messaging website coaxes contributors into feeling anonymous and uninhibited. Perhaps its short-burst format encourages streams of consciousness that go tragically unedited. Or, possibly, the world is full of more jerks than we care to acknowledge. Whatever the explanation, a shocking number of Twitterers manage to use just 140 characters to come across as massive jackasses. (See the top 10 social-networking apps.) "Watching a LOT of fashion mistakes go past whilst waiting for the bus," a British Twitterer pouts. "This is why I don't use public transport." And who can't relate to this dilemma plaguing a Mary Kay executive: "I make multi-million $ decisions on a regular basis — why is it soooo difficult to decide what to do with my hair?" These paragons of narcissism, misanthropy and delusion now have a shrine of their own, at tweetingtoohard.com (tagline: "Where self-important tweets get the recognition they deserve.").