The good people at Readwriteweb explain how they use Twitter for journalism.

Pretty much the same as us at Journalism.co.uk – they say it falls into four distinct categories:

The discovery of breaking stories
People they follow tipping them off

Interviews
“When we got to interview Mark Zuckerberg at SXSW this year, we solicited interview questions via Twitter.”

Quality assurance
Readers picking up on their factual errors.

Promotion
Tipping off the people that follow them