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

3 Out of 4 Negative Tweets Happen While Customers Are Still Inside the Restaurant
Social Media

3 Out of 4 Negative Tweets Happen While Customers Are Still Inside the Restaurant

Social media provides a new way to deal with disgruntled customers before they even finish eating.
Kate Taylor
What America's Retailers Are Spending on Social Media This Holiday Season (Infographic)
Social Media Marketing

What America's Retailers Are Spending on Social Media This Holiday Season (Infographic)

Many companies are investing in Facebook campaigns despite changes to its organic reach.
Constance Aguilar
Twitpic Gets New Lease on Life Thanks to Mystery Acquirer
Acquisitions

Twitpic Gets New Lease on Life Thanks to Mystery Acquirer

The popular photo-sharing platform will no longer shut down.
Nina Zipkin
Boost SEO by Showcasing How Smart You Are
Coaches Corner

Boost SEO by Showcasing How Smart You Are

Our experts explain how positioning yourself as an expert can help maximize your site for search.
Jacob Hall
9 Juicy 'Extras' to Offer Journalists That Can Instantly Sweeten Any PR Pitch
Press coverage

9 Juicy 'Extras' to Offer Journalists That Can Instantly Sweeten Any PR Pitch

If you want publicity, you have to make it as easy -- and enticing -- as possible for journalists to jump on your story.
Joan Stewart
Find Your Next Great Hire on Twitter
Hiring

Find Your Next Great Hire on Twitter

Use these five strategies to utilize chats on the social network for job candidates in your industry, or have them coming to you.
Josh Tolan
Denny's Just Capitalized on Apple's Tech Glitch in a Genius Marketing Move
Social Media

Denny's Just Capitalized on Apple's Tech Glitch in a Genius Marketing Move

The restaurant chain was quick to latch onto Apple's tech glitch, creating a clever Twitter post that went viral in minutes.
Kate Taylor
Gone in a Flash: Twitpic to Shut Down Following Dispute With Twitter
Trademarks

Gone in a Flash: Twitpic to Shut Down Following Dispute With Twitter

The image sharing site is closing down after Twitter requested it drop its trademark application.
Nina Zipkin
A Day in the Life of a Successful Social-Media Strategy
Social Media Marketing

A Day in the Life of a Successful Social-Media Strategy

Success isn't dependent on some X-factor or trick, but on consistency, connection and a little creativity.
Eric Siu
4 Simple Steps to Plan a Successful Tweetup
Networking

4 Simple Steps to Plan a Successful Tweetup

For those people constantly on Twitter, planning a tweetup can help bring online relationships offline. Not only does it help with networking but also building your personal brand.
Ann Tran
Sony Suffers Cyber Attack, Bomb Threat
Cyber Attacks

Sony Suffers Cyber Attack, Bomb Threat

Sony's PlayStation network was shut down for several hours on Sunday while a flight carrying an executive at the company was diverted due to a bomb threat.
Laura Entis
New Delaware Law Determines Where Your Digital Assets Live After You Die
Estate planning

New Delaware Law Determines Where Your Digital Assets Live After You Die

The law grants executors precisely the same access to digital information as they would possess for comparable physical documents.
Geoff Weiss
Your Twitter Timeline Is About to Get a Lot More Cluttered
Twitter

Your Twitter Timeline Is About to Get a Lot More Cluttered

Up until now, your timeline was limited to tweets and retweets from people you follow. But that's all changing.
Laura Entis
Chill, People. Why You Shouldn't Hate Twitter For Adding Favorites to Timelines.
Twitter

Chill, People. Why You Shouldn't Hate Twitter For Adding Favorites to Timelines.

Oh, no! Favorites now appear in your Timeline like retweets. Here's why it doesn't matter.
Kim Lachance Shandrow