A very interesting and insightful eye tracking study was released by Catalyst Design Group (no relation or affiliation with CatalystNYC.com).
The report attempted to determine if there were differences in engagement between various designs of friends lists on social media platform, in particular Facebook and LinkedIn.
Friends lists on social media platforms are obviously very important, as they surface some of the key value adds of a social network (i.e. ability to network and interact with people), as well as speak to the engagement actions users can take and how best the platforms are enticing those users to interact.
All in all and very interesting report and worth a read.
You can download the report here.