Image courtesy of The WhitehouseMany people aspire to be the Mayor of places they check-in to on Foursquare. There's one new user, however, for who that would be a demotion.President Obama Joins Foursquare (Mashable)It is probably more accurate to say that the President's office signed up as we learn from the official White House Blog. Take a Tip from the White House on FoursquareHere's what's planned for this Foursquar account:- Follow White House "Tips": See the places the President and admini [...]

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