Above is a screenshot of a new feature I’ve been playing around with on LinkRiver: attention data. Clicking on a user’s “attention” tab will show the top sites and the top keywords from links shared by that user. Click through about to see my attention data — I’m interested in Ruby, Barack Obama, MySQL, Nginx, Twitter, the iPhone, etc. My friend Chris, a chemist for biofuel startup PrimaFuel, has different interests: energy, solar, Barack Obama, and energy. What do you think?