HEATKEYS

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 ...

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.

foursquare

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

Diigo Groups provides a ground-breaking collaborative research and learning tool that allows any group of people to pool their findings through group bookmarks, highlights, sticky notes, and forum.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you...

SnapWidget allows you to display your Instagram photo gallery on your website or blog using an easily customizable and embeddable widget.

StumbleUpon is a discovery engine that finds the best of the web, recommended just for you.

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