Have you "Checked In"? Share w/ friends where you're at, get deals or find out what's cool, through Foursquare or Whrrl.
Check in any place that has location: a coffee shop, a park, the bridge you're strolling over, an airport, your office. Many local businesses offer deals (10% off Pinkberry w/ a check-in, for ex.). Keep an eye out for the yellow "Special Nearby" icon to discover new venues offering deals near you!