HEATKEYS

San Francisco - User Reviews and Recommendations of Top Restaurants, Shopping, Nightlife, Entertainment, Services and More at Yelp

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

Emporis is a leading database for building information worldwide. You find information about construction projects, architecture, the building industry and city planning.

foursquare

Twitter is without a doubt the best way to share and discover what is happening right now.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you...

With Phorio you find great architecture, buildings, and other interesting places - in your own neighborhood or around the world.

delcampe.net is the best auction website dedicated to collectibles: stamps, postcards, coins,...

dgMarket is the largest international portal for tenders and procurement opportunities from governments and international organizations.

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we've been working on.