@katiecouric LIVE with Twitter's Biz Stone 4/20/10

CBSNews.com announced a special, LIVE @katiecouric interview with Twitter co-founder Biz Stone.  

The interview will happen live, April 20th, at 3:15pm ET.

Last month alone, more than 22 million Americans visited Twitter. That's up from over half a million, just one year ago.

If you have a question you want Katie to ask, send her a Tweet @katiecouric, and be sure to include #katiebiz.

@katiecouric is a weekly Webshow, with new episodes every Tuesday. It features candid one-on-one interviews with Katie Couric, Anchor and Managing Editor of the CBS Evening News and top newsmakers from the worlds of politics, business, and entertainment.  Past interviews have included Glenn Beck, First Lady Michelle Obama, pop star Justin Bieber, and Sesame Street's Elmo.