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

Twitter Is Selling Ad Space in Your Following List
Twitter

Twitter Is Selling Ad Space in Your Following List

Don't worry, you didn't accidentally follow MasterCard. They just paid Twitter to be featured on your Following list.
Kate Taylor
10 Great Social-Media Strategies to Boost Your Results and Save You Time
Social Media Marketing

10 Great Social-Media Strategies to Boost Your Results and Save You Time

There's no shortage of intriguing new social media strategies. Here's a look at some that can improve your results -- fast.
Kevan Lee
This App Creates an Instant Digital Dossier for the People You Meet
Apps

This App Creates an Instant Digital Dossier for the People You Meet

Refresh helps you make a personal connection by curating digital data.
Jonathan Blum
Entrepreneur's 10 Most Popular Stories About Social Media in 2014
Social Media

Entrepreneur's 10 Most Popular Stories About Social Media in 2014

Of all the stories we wrote this year that examined social-media trends and advice, these were the ones you liked best.
Carly Okyle
17 Quick Wins to Boost Your Social-Media Marketing Right Away
Productivity

17 Quick Wins to Boost Your Social-Media Marketing Right Away

Take a few minutes to knock a few of these off your list, and you're likely to see gains that go above and beyond the time you've invested.
Kevan Lee
A Quick Guide to Mastering Twitter for Business
Twitter Marketing

A Quick Guide to Mastering Twitter for Business

Critical tips to help you maximize your 140-character interactions.
Carol Roth
The 5 Worst Twitter Marketing Fails of 2014
Mistakes

The 5 Worst Twitter Marketing Fails of 2014

#Fiasco. Some brands excel at tucking their tails between their tweets. Here's a naughty list of the ugliest Twitter marketing disasters this year and the important lessons you can learn from them.
Kim Lachance Shandrow
Instagram Treats Users to Five Fresh, New Filters
Instagram

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
Careers

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.
Lindsay Broder
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
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