When 140 characters is too much

They loved it. Now they hate it. A growing number of celebrities, athletes, and self-promoters are burnt out and signing off of Twitter. Many have got overwhelmed. Some people built big audiences on social network only to have their followers turn against them. Others complain that tweets that once drew lots of attention now get lost in the noise.
As Twitter began trading publicly yesterday, the company was trying to sell potential investors on the idea that its user base of 232m will continue to grow along with the 500m tweets that are sent each day. The company’s revenue depends on ads it inserts into the stream of messages.