Compete ran some numbers last month on the average income levels for each of the top 6 social networking sites in the US.
...LinkedIn of course has a larger percentage of high income wage earners than most social networks. But if the numbers below are correct, Google+ has an even more affluent user base than LinkedIn.
Google+ has the highest percentage of it’s user base from those making $100k and above. LinkedIn counts 27 percent of their social network from this same group....
Via Jeff Domansky