NEW YORK - (AP) - Officials are launching digital partnershipswith companies including Facebook, Tumblr and Foursquare in aneffort to update and streamline New York City's social-mediapresence.

Mayor Michael Bloomberg announced Monday that the city will workwith Foursquare to allow visitors and residents to digitally checkin when they arrive at public spaces. The city also will rewardpeople with a virtual badge when they check in at enough parks andcultural centers.

Officials also plan to draft the city's Web developers to helprevamp the web site.

Bloomberg says the city will hold a weekend-long "hackathon"in which developers and designers will be invited to createprototypes for the site.