Digg: What is Digg? | How Digg Works | Privacy

Digg is a place for people to discover and share content from anywhere on the web. From the biggest online destinations to the most obscure blog, Digg surfaces the best stuff as voted on by our users. You won’t find editors at Digg — we’re here to provide a place where people can collectively determine the value of content and we’re changing the way people consume information online.

Facebook: About | Help | Advertising | Mobile | Privacy

Facebook’s mission is to give people the power to share and make the world more open and connected.

Millions of people use Facebook everyday to keep up with friends, upload an unlimited number of photos, share links and videos, and learn more about the people they meet.

Twitter: Getting Started | Support

Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?

In order to use Twitter effectively, you will need a Twitter application. I have listed a few below.

Tweetdeck

Twirl

Tweetie (for Mac)

Twitteroo

Tweetbar (Firefox Sidebar)

DigiTweet

YouTube: Home | Advertising | Partnerships |

Founded in February 2005, YouTube is the leader in online video, and the premier destination to watch and share original videos worldwide through a Web experience. YouTube allows people to easily upload and share video clips on www.YouTube.com and across the Internet through websites, mobile devices, blogs, and email.

LinkedIn: Home | Help | Overview

LinkedIn is an interconnected network of experienced professionals from around the world, representing 170 industries and 200 countries. You can find, be introduced to, and collaborate with qualified professionals that you need to work with to accomplish your goals.

Mashable: Home | About Us

Founded in July 2005, Mashable is the world’s largest blog focused exclusively on Web 2.0 and Social Networking news. With more than 5 million monthly pageviews, Mashable is the most prolific blog reviewing new Web sites and services, publishing breaking news on what’s new on the web. Mashable will put your brand in front of the most tech-savvy early adopters, venture capitalists, entrepreneurs, influencers, Web 2.0 aficionados and technology journalists. Mashable is also popular with bloggers and members of social networking sites — an increasingly influential demographic.

Ping: Home | Privacy

Ping.fm is a simple service that makes updating your social networks a snap.