HEATKEYS

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

TripAdvisor - Unbiased hotel reviews, photos and travel advice for hotels and vacations - Compare prices with just one click.

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 ...

A great place to find information, read reviews and share experiences about local business in your city.

Hotels Combined is a price comparison service for hotels. We search all major accommodation websites and compare rates. We also provide hotel information, reviews and maps. We find you the best hotel deals – guaranteed!

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

foursquare

YouTube is a place to discover, watch, upload and share videos.

Walk Score calculates the walkability of any address. Walk Score helps you find a walkable place to live.

Waymarking - A scavenger hunt for unique and interesting locations in the world

Geocaching is a treasure hunting game where you use a GPS to hide and seek containers with other participants in the activity. Geocaching.com is the listing service for geocaches around the world.