HEATKEYS

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

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 ...

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

Web Technology usage statistics and list of websites using web technologies.

Intelligence on High-Growth Private Companies. Comprehensive profiles, real-time information, news and analytics on the companies you seek. Improve sourcing. Speed due diligence. Gather market and competitive intelligence.

foursquare

IsSiteDownRightNow.com tells you if a site is not working for you or everyone else.

For iPhone developers who love their apps, App Annie keeps tabs on your apps, making it easy to track sales, rankings, and reviews from around the world.