"I expect the growth to continue to accelerate," Allen said. "Google can continue to integrate Google+ into its other products and word of mouth will continue to build. Most importantly, 700,000 Android devices are activated daily and this will become a very significant source of new users for Google+. That number will also grow next year."

Google itself has been shy about releasing user numbers for its social network. A company spokeswoman told CNET that Google doesn't have any comment on Allen's latest reports. The most recent data released by the company came from its October 13 earnings call, when CEO Larry Page revealed that more than 40 million people had signed up for Google+.

Around 625,000 new users have been hopping aboard the social network each day, which means almost a quarter of all Google+ users joined in December alone.

Assuming that rate continues, Google+ could hit 100 million users on February 25, 200 million on August 3, and 293 million by the end of 2012. But can Google maintain and even increase that growth rate?

http://news.cnet.com/8301-17939_109-57349107-2/google-surpasses-62-million-users/