A quote from that site I refuse to link to:
Visitors using personal computers spent an average of about three minutes a month on Google+ between last September and January, versus six to seven hours on Facebook each month over the same period, according to comScore, which didn’t have data on mobile usage.
3 minutes versus seven hours. I mean, 3 minutes!
The sad thing is: I bet when mobile usage is counted, the gap is actually worse.
We keep hearing over and over how Google+ is on the up-and-up — from Google. 10 million sign-ups here. A billion more there. So many fucking sign-ups.
The reality of the situation sure seems to be the opposite. The only people I know that use Google+ regularly are people who work at Google (and Robert Scoble).
It’s just not working. For fundamental reasons. Millions more in TV ad spend won’t fix that.