Industry analysts say the trick will be whether the momentum that has taken its new social network to a spot in the top 10 ranking in just a matter of weeks.

"This is good growth," said Matt Tatham, spokesman for Experian Hitwise, an online traffic tracker. "Obviously, when they opened up the site, it did really well. It's down from that initial peak, [but] now they just need to sustain this traffic growth month over month."

Thatham told Computerworld on Monday that during the week of Sept. 20, when Google+ officially went from invitation-only to an open membership model, the site had 14.98 million U.S. visits. Last week, those numbers were down to 7.2 million visits.

However, the positive news is that it's still up considerably from the average 1.2 million visits the site saw between Aug. 6 and Sept. 17.

Google's new social network saw a 349% jump in visits between August and September, going from 5.4 million U.S. visits to 24.2 million, according to Hitwise.