Social network Google+, which turned a year old at the end of June, has seen its user base take a dramatic jump in the past six to seven months, according to comScore, an Internet traffic monitor.
According to comScore, total unique visitors to Google+ in the U.S. went from 15.2 million in November 2011 to 27.7 million in June of this year. That's a jump of 82%.
Worldwide, Google+ visitors jumped from 66.7 million to 110.7 million in the same time period, marking a 66% increase, comScore reported.
"That's impressive," said Zeus Kerravala, an analyst with ZK Research. "I guess there is room for an alternative social networking vendor."
Google's social network had more good news earlier this month. The American Customer Satisfaction Index released a survey showing that while Facebook's user satisfaction rating dropped 8% over the last year, to 61 on a 100-point scale, Google+, making its first appearance in the survey, scored 78.
Kerravala noted that Facebook may be the world's largest social network with more than 900 million global users, but the site has taken some major hits lately.
First, Facebook's IPO failed to take off in the way that industry and financial analysts had expected it to. While the company's stock opened at $38 a share, it was expected to soar to $50, $60 or even $90 a share. That did not happen. As of 2:30 ET on Monday, Facebook's stock was trading at $23.30.
Late last week, during Facebook's first quarterly earnings call, the company reported a loss of $157 million for the quarter that ended June 30. However, Facebook also boosted revenue by 32% in its first earnings report, bringing in $1.18 billion and just topping analysts' expectations.
With mixed financial results and a lower-than-expected IPO, Facebook has lost some of its luster, opening the door to competitors, Kerravala said.
"People trying out Google+ certainly create a threat to Facebook," he added. "There might be a bit of the alternate coolness factor here, too. Where the masses use Facebook, some people wanting an edgy alternate turn to Google+. Who wants to be on a social networking site with your parents and little siblings?"
Sharon Gaudin covers the Internet and Web 2.0, emerging technologies, and desktop and laptop chips for Computerworld. Follow Sharon on Twitter at @sgaudin, on Google+ or subscribe to Sharon's RSS feed . Her email address is firstname.lastname@example.org.