Poll: How quickly will Google+ overtake Facebook?
Google+ approaching 20m users in less than three weeks, analysis shows
Google+ growth chart by Paul Allen
Google+ approaching 20m users in less than three weeks, analysis shows
Google+ growth chart by Paul Allen
I still firmly believe that Google+ is too different from Facebook to take it over entirely. Although, I do admit that it's still in beta testing, so it could change drastically (for the better). All in all, Google+ has some significant downsides from Facebook: no vanity URL, no business profiles, etc.