Obama and I - Do we Run in the Same Circles?

I was very surprised to find that my Linkedin profile featured President Obama as a person which users also looked up on Linkedin while checking me out! Of course I immediately thought of complaining to Linkedin customer service since they omitted to feature me on Obama's page along with Hillary Clinton, Kevin Bacon, and Bill Gates. What is wrong with these people?! ;-) Then I sat back closed the draft email to Linkedin customer service team and realized this might be a bug ; or maybe everyone had Obama in their list. Do you? I feel flattered but I have a hard time understanding how such a great feature (obviously made to foster new relevant links between members) can work if it features popular profiles at the top of the list. Everyone is going have the same people on their list. Anyone knows what algorithms Linkedin uses? Maybe Steven Stegman, Research Scientist and Senior Product Manager at LinkedIn can tell us.