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

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Instagram Treats Users to Five Fresh, New Filters

Their names are predictably funky, but they look pretty sweet.
Kim Lachance Shandrow
5 Tips to Get Active on Twitter and Reach Your Brand's Audience
Twitter

5 Tips to Get Active on Twitter and Reach Your Brand's Audience

Twitter is an insanely popular micro-blogging platform with an incredible reach of people you may want to know.
Deborah Mitchell
How Technology Demands a Different Approach to Your Job
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How Technology Demands a Different Approach to Your Job

Being more productive can be a double-edged sword. How to use technology in a way to help, not hurt, your career.
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Presented by
Twitter Co-Founder: 'I Don't Give a Sh*t' If Instagram Has More Users
Competition

Twitter Co-Founder: 'I Don't Give a Sh*t' If Instagram Has More Users

In an interview, Evan Williams doesn't mince words comparing Twitter to Facebook-owned Instagram.
Erin Griffith
How to Use Twitter Analytics to Help You Tweet Better
Twitter

How to Use Twitter Analytics to Help You Tweet Better

Here are 15 easy-to-find stats that can get your Twitter marketing on the right track.
Kevan Lee
Delivered by
Oh, Snap! Instagram Has More Users Than Twitter.
Instagram

Oh, Snap! Instagram Has More Users Than Twitter.

The photo-based social network announced a verified user feature, taking a page from Twitter, which it has just surpassed in user numbers.
Catherine Clifford
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
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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