Google+ has joined Facebook, Twitter and LinkedIn in the 100 million-plus-unique-visitors-per-month club, but it's lagging in mobile, according to data from comScore.
The network attracted 105 million monthly users in October 2012 compared to 65.3 million in October 2011, a 60.9% increase. Comparatively, Facebook had 822.1 million unique visits, up 4.3% from 788.2 million for the same period. Twitter had 182.9 million visitors and Linkedin claimed 161.9 million.
Those stats refer to global usage. In the U.S., the breakdown looked like this:
Last June, Google claimed that users spent an average of 12 minutes a month on the network.
In December, Google also claimed 500 million members and 135 million active monthly visitors.