After the recent Google Reader update where they removed Reader's social features in favor of G+, people are now actually using G+ to +1 RSS items. Before the G+ integration, you could see over 100 people "liked" each xkcd post. Now, all that activity has shifted over to people +1'ing each post (to the tune of thousands of +1's per xkcd post).<p>I wonder what the breakout for follower dynamics looks like between Twitter, G+ and Facebook. In my limited anecdotal experience, Twitter is great for celebrities to mass advertise themselves with huge follower counts. G+ is niche enough that you can communicate back and forth and be heard on posts. Nobody uses Fb's subscribe feature.