Another Google+ data point
The content being created and shared on Google+ is quite good. So much so that many posts that have originated here have been featured as leading articles on Techmeme, the much-watched technology news curator led by +Gabe Rivera. While Gabe and team have had Twitter activity play a role in the site as well, no other social network (Facebook, FriendFeed, Google Buzz, etc.) has previously gotten this level of visibility.
Google Plussers +Paul Allen and +Danny Sullivan have seen their content shared on Techmeme frequently enough that both are listed on the Techmeme leaderboard, which tracks the most frequently carried sources on the site over the last 30 days.