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

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections t...

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 fr...

foursquare

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights a...

CrunchBase is the free database of technology companies, people, and investors that anyone can edit.