HEATKEYS

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

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 ...

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

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.

foursquare

Listen to online radio, find streaming music radio and streaming talk radio with TuneIn. The best guide to every type of radio: conservative, progressive, public, news, sports, religious, jazz, classical, rock, country, business, latin, hip-hop, pop...

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

Open source travel guide featuring up-to-date information on attractions, hotels, restaurants, travel tips and more. Free and reliable advice written by Wikitravellers from around the globe.

The World

Honest hotel reviews, millions of travel buddies, and thousands of travel blogs to help plan your next trip. Share travel tips, find a travel buddy, or blog about your travel experiences, all for free.