Twitter

Twitter

Twitter is a popular microblogging social network service. The San Francisco-based company was founded by Jack Dorsey, Biz Stone, and Evan Williams in 2006.

Users are able to send and read messages -- also known as tweets -- that are up to 140 characters long. Tweets are publicly visible unless a user protects his or her account so that only approved users have access to it. Users can "follow" friends and colleagues, as well as their favorite brands, news outlets and other institutions. Twitter has also become a useful marketing tool for businesses.

A username, or user's "handle," is generally a series of letters and numbers preceded by the "@" sign. For instance, Entrepreneur magazine's Twitter handle is @EntMagazine. Tweets can be tracked in groups by using a hashtag, or the "#" sign, before the word or phrase.

As of September 2011, Twitter said it has 100 million active users worldwide.

Today's Most Read

News and Articles About Twitter

5 Twitter Tips That Will Enhance Your Personal Brand
Twitter

5 Twitter Tips That Will Enhance Your Personal Brand

Become one of the influentials in the tweeting universe by sprucing up your presence on the platform.
Mel Carson
5 Social-Media Sources of Testimonials for Your Business
Social Media Marketing

5 Social-Media Sources of Testimonials for Your Business

By monitoring your public posts and encouraging your fans to share what they value about your company's product or service, you'll build a strong portfolio of credible recommendations.
Firas Kittaneh
This State Ranks No. 1 for Bragging on Social Media
Social Media

This State Ranks No. 1 for Bragging on Social Media

Can you guess where people use social media to self-promote the most, and where the humblest people in America live? Take a look.
Kate Taylor
Twitter Co-Founder Launches 'World Positive' Investing Fund
Social Entrepreneurs

Twitter Co-Founder Launches 'World Positive' Investing Fund

Ev Williams and a handful of seasoned Silicon Valley entrepreneurs unveil their latest project: Obvious Ventures.
Catherine Clifford
Hey, Social-Media Marketers, Shut Up Already
Social Media Marketing

Hey, Social-Media Marketers, Shut Up Already

When you're hanging out, the last thing you want to hear about is business.
Greg Shugar
Taking Another Shot at Snapchat, Facebook Gives Its Slingshot Messaging App a Makeover
Facebook

Taking Another Shot at Snapchat, Facebook Gives Its Slingshot Messaging App a Makeover

Facebook isn't ready to vanish from the evaporating messaging game, but will users take the bait?
Kim Lachance Shandrow
Finally, You Can Add a Background Image to Your LinkedIn Profile
Linkedin

Finally, You Can Add a Background Image to Your LinkedIn Profile

Picture this: Now your brand can shine even brighter on LinkedIn.
Kim Lachance Shandrow
Twitter Unveils Improved Tools to Report Harassment
Twitter

Twitter Unveils Improved Tools to Report Harassment

The company said it will now require less information from users flagging inappropriate content, among other changes.
Brands Waste Resources on Facebook and Twitter
Social Media Marketing

Brands Waste Resources on Facebook and Twitter

A recent study suggests marketers abandon platforms with low reach and engagement, and instead turn to other social media sites and brand communities.
Kevin Allen
The 5 Big Reasons People Aren't Following Your Social-Media Accounts
Business Circle

The 5 Big Reasons People Aren't Following Your Social-Media Accounts

The audiences are there, but if you're making one of these errors, they won't acknowledge you.
Zach Cutler
Uber May Soon Be Worth 1-1/2 Twitters
Valuations

Uber May Soon Be Worth 1-1/2 Twitters

The ridesharing company is reportedly raising new financing that would value it at $40 billion.
Laura Entis
Twitter Unveils New Ecommerce Feature
Ecommerce

Twitter Unveils New Ecommerce Feature

The social platform now allows marketers to put coupons in users' feeds with Twitter Offers.
Nina Zipkin
Twitter Reportedly in Talks to Acquire Shots, the Bieber-Backed Selfie App
Acquisitions

Twitter Reportedly in Talks to Acquire Shots, the Bieber-Backed Selfie App

This could be the acquisition Twitter's CFO accidentally tweeted about on Monday.
Laura Entis