Google entered the social networking game with Google+ to fanfare and high hopes. But only a third of the site's users ever make a public post, and those who do only post every 12 days. Google+ seems to be inescapable. Everywhere you go on the Web, you see that little logo and a picture. (Heck, I get tired of seeing my own mug staring back at me, page after page.) And people who are responsible for traffic on many sites have worried that competitors will find ways to use the social networking feature to grab page views.