With perhaps as many as one-in-10 accounts run by spammers (according to a new study) and a healthy subculture bent on subversion, Twitter — finding a sudden need to turn users into advertiser dollars — wishes everyone would grow up. Twitter is predicated on identity. People meet over Twitter, know each other by both the Twitter username and the contents of a Twitter feed — a streaming news ticker of someones conscious. The media, identified by Twitter handle on TV chyrons, cite eyewitness testimony or feedback conveyed from anonymous people in 140 characters or less.