Social Networking

	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 they meet.
	a free social networking and microblogging service that enables its users to send and read messages known as tweets. Tweets are text-based posts of up to 140 characters
	Find friends & classmates, meet new people, listen to free music & build playlists, share photos, watch videos, start a blog, read celebrity news, get cool apps, free IM & more…

Social Median - is a social news network that connects people with personalized news and information. socialmedian enables you to easily keep up-to-date on the news that matters to you and to people who share your interests
Jaiku - create your own microblog and connect with your friends.
YouTube - share your videos with friends and family
Flickr - the best online photo management and sharing application in the world
del.icio.us - social bookmarking
StumbleUpon - the best way to discover great websites, videos, photos, blogs and more.
Pownce - a network of the people you know and then you can share stuff with all of them, just a few of them, or even just one other person really fast.
Virb - Friends, Music and Video... we're helping you stay connected.
Last.fm - the world's largest social music platform. Show off your taste, see what your friends are listening to, hear new music, get personal radio, recommendations, and downloads, all for free.
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.