Though Google+ (GOOG) claims an impressive 90M registered users, data from ComScore shows that...

|By:, SA News Editor

Though Google+ (GOOG) claims an impressive 90M registered users, data from ComScore shows that those users only spend an average of 3 minutes per month on the service compared to users on Facebook (FB) who park on the site for 7 hours a month. One media buyer sums up the advertising implications by noting that Google+ doesn't have the "same degree of vibrancy" of Facebook, Twitter, or Pinterest.