As a candidate, Barack Obama harnessed the power of social-media sites such as Twitter, Facebook and YouTube. So it's no surprise that his administration recently set up official profiles for the White House on these sites and more.
Ever spent an afternoon at the driving range hitting microchip-embedded golf balls that can be tracked on a screen right next to your tee? Ever used a GPS-enabled cart out on the course to calculate your ball’s distance to the next green? Ever lost a ball, then whipped on special high-tech glasses that filter out foliage? Note to players still carrying paper scorecards: Golf has gone over to the geek side.