Biz Stone to Chat with Katie Couric

Twitter co-founder Biz Stone will speak with Katie Couric on her weekly online Web show, @katiecouric, which will be streamed live Tuesday at 3:15 p.m. ET.

CBS News said users should tweet questions to Couric’s Twitter account, with the #katiebiz hashtag, and Couric will ask Stone the most retweeted questions.