Prediction Thread number one: Tony Blair to quit before the end of October.

Google+ To Reach 400 Million Users Within A Year, Statistician Predicts

Google+, the six-month-old site on which Google has pinned its social networking hopes and dreams, will have 400 million users within a year.

That's the bullish prediction made by Paul Allen, the founder of Ancestry.com and a self-described "unofficial statistician" for Google+.

Allen wrote in a post on Google+ that, according to his calculations, the social network has surpassed 62 million users and is adding 625,000 people each day, a number he expects will grow and help Google+ to reach 400 million users by this time next year.

Allen argues that the pace at which Google+ adds new members will speed up as more users join the service.

"I expect the growth to continue to accelerate however," Allen wrote. "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 has been mum about the size of Google+'s userbase since October, when Google CEO Larry Page announced that Google+ had surpassed 40 million members. A Google spokeswoman declined to comment on Allen's estimates.

Tony Blair quit in June 2007.

Only 8 months out.

Note that there was never a "Prediction Thread number two"...