HEATKEYS

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.

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

This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

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 ...

Our breakthrough heliostat and control technologies make electricity generation from large scale solar thermal plants cost-competitive with fossil fuels. Our mirrors are 100 to 300 times smaller than conventional designs and cost 50% less.

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

Make your trip go further with Hostels.com. We offer the most comprehensive selection of hostels on the internet with over 35,000 hostels in 180 countries. Bringing you great value and providing a service that is fuss free, reliable and frankly brill...

Helps groups of people with shared interests plan meetings and form offline clubs in local communities around the world

foursquare