
According to unofficial tracking conducted by Google+ watcher and Ancestry.com founder Paul Allen, the upstart social network is rapidly gaining new users and recently passed 62 million users as of December 25. He also estimates that approximately 625,000 people are signing up for Google+ each day and the network will likely break through 100 million users by late February 2012. Assuming that the current rate of growth continues over the next year, Google will have nearly 300 million users by the end of 2012. However, Allen predicts that the rate of growth on Google+ will accelerate and the search company will have over 400 million Google+ users by the end of next year.

While the rapid growth of the Google+ user base is definitely a promising sign for the search company, the amount of active users is still a mystery and recent estimates seem to indicate that it’s a small fraction of total users. Experian Hitwise recently tracked a bit over 9 million visits to Google+ during the week ending December 17, but that trails far behind the 15 million visits during launch week in September with a much smaller user base.