Does 200 million accounts mean that Twitter has 200 million active users?

Apr 19, 2011
Nope. Definitely not. Lots of folks have multiple, multiple Twitter accounts and millions of others have opened Twitter accounts that are sitting...

Terror warnings coming to Twitter and Facebook

Apr 8, 2011
The old multi-colored terror alert system is being scrapped and replaced with just two levels: elevated and imminent. Why the lowest level will be...

National Labor Relations Board going after Reuters in Twitter case

Apr 7, 2011
An employee of Thomson Reuters tweeted something critical of her company's management. Now the NLRB will file a complaint against Thomson Reuters...

Twitter turns 5

Mar 21, 2011
On this day in 2006, Jack Dorsey wrote "just setting up my twttr". That was the first tweet ever in what has become a huge global communications...

Twitter adds https option

Mar 16, 2011
Twitter has joined Facebook and a few other sites in offering a higher level of security for users. Twitter users can now opt for https setting on...

Mid-day Update: More on Japan, goodbye Zune

Mar 15, 2011
On today's show, Marketplace continued to follow the effects of Friday's earthquake and tsunami in Japan. The Japanese government is monitoring the...

For public good, not for profit.

Twitter makes life harder for app developers

Mar 14, 2011
Twitter has notified developers who build on the Twitter platform that they can't emulate the timeline function of Twitter since they would then...

TWITTER: Watching the tsunami from the 17th floor in Waikiki

Mar 11, 2011
Marketplace reporter Adriene Hill and producer Angela Kim were in Hawaii this week reporting on a future story for the sustainability beat when t...

Another Twitter no-no

Mar 10, 2011
This final note today, in which the promise and the peril of Twitter is on full display. Chrysler -- like all media-savvy companies out there --...