An eye tracking study of 54 users under the age of 34 shows that Facebook users and Google+ users read their homepage in the same way.
The Boogeyman's Sophie Thatcher Reveals What Draws Her to Dark Characters | io9 Interview
Both Facebook and Google+ users begin by examining the main column where all the content is located. They then jump around from the left, right and top columns as they scan the less important parts of the page. The amount of time spent reading each section is almost identical between the two social networks as well.
So either Google designed its homepage to match Facebook or all you geeky Google+ users are more like your Facebook friends than you think. [AllThingsD]
You can keep up with Kelly Hodgkins, the author of this post, on Twitter, Google + or Facebook.