NEW YORK (CNNMoney.com) -- Twitter may be a fast-growing social network, but most of its 50 million accounts merely follow other users rather than posting their own messages.
In fact, a whopping 73% of Twitter accounts have tweeted fewer than 10 times according to a new report from Barracuda Networks, a Web security company.
It seems that Twitter is becoming more of news feed than a social network, said Paul Judge, author of the report and chief research officer at Barracuda. And that raises questions about its growth potential, as well as how the Internet phenomenon will make money.
As of December 2009, only 21% of Twitter account holders were what Barracuda defines as "true users," meaning someone who has at least 10 followers, follows at least 10 people and has tweeted at least 10 times.
That indicates that most Twitter users "came online to follow their favorite celebrities, not to interact with their buddies the way they would on Facebook or MySpace," said Judge.
The follow-only trend exploded when celebrities helped push the microblogging site into the mainstream during a six-month period that Barracuda calls Twitter's "red carpet era."
From November 2008 to April 2009, several celebrities, including Ashton Kutcher, Oprah Winfrey and John Mayer, joined Twitter. And the site grew 21.2% in the month of April 2009 alone.
"The most famous people have already joined Twitter, so I don't think they'll see another growth spurt like that," Judge said.
So the question now, said Judge, is whether Twitter can get more of these followers to start tweeting themselves.
The company is bringing its AmazonFresh service to New York for the first time. More
Economists concerned over rapidly rising corporate debt levels in China are sounding the alarm, warning that major changes are needed to avoid an increase in "zombie" banks and firms. More
As North Dakota's oil boom rages on, the droves of job seekers who have flocked there over the past few years are finally starting to move their spouses to the area and settle down. The result? Lots of babies. More