Google+ Growth Accelerating. Passes 62 million users. Adding 625,000 new users per day. Prediction: 400 million users by end of 2012.
Google+ is adding new users at a very rapid pace. It may be the holidays, the TV commercials, the Android 4 signups, celebrity and brand appeal, or positive word of mouth, or a combination of all these factors, but there is no question that the number of new users signing up for Google+ each day has accelerated markedly in the past several weeks.
Each week my team from elance runs hundreds of queries on various surnames which we have been tracking since July. We revised our model based on the actual user announcements made by Google on July 13th and Oct 13th.