One measure of the relative popularity of Google+ and Facebook is to compare the number of 'likes' with '+1s' on a popular page. For example, on the following page there are currently 64 '+1s' and 260 'likes':
http://www.businessweek.com/magazine/lego-is-for-girls-12142...
By this measure, Google+ is at 25% of Facebook. I remember when Google+ went into 'anybody-can-use-it' mode a few months ago it was only around 5%. This suggests Google+ is doing quite nicely, thank you. But perhaps it is just showing how Google+ is becoming more popular with spammers...?
To be fair, the comparison might not be entirely accurate since it is possible to 'plus one' something while just being a gmail/youtube user -- without necessarily being an active google+ user.
By this measure, Google+ is at 25% of Facebook. I remember when Google+ went into 'anybody-can-use-it' mode a few months ago it was only around 5%. This suggests Google+ is doing quite nicely, thank you. But perhaps it is just showing how Google+ is becoming more popular with spammers...?