Celebrity megaphone fails to lure ordinary users to Twitter

NEW YORK (AP) — Many people have heard of Twitter. Not enough of them are signing up to use it.
Twitter’s role as a megaphone for the U.S. president, countless celebrities and businesses hasn’t attracted regular people to the service — not in the way Facebook has, or even Instagram and Snapchat.
The San Francisco company’s latest earnings report and dismal forecast suggest that this is unlikely to change any time soon. CEO Jack Dorsey acknowledged long ago that Twit