They both had touched on several areas including how Biz got started with Twitter and what Twitter would be in 5-10 years from now. Biz has a good take on how Twitter is mashing up with both online and mobile social networks. Check it out and do comment on Daniel's podcast. Daniel was also recently interviewed by Robert Scobble and just in case if you havent seen it yet, check out the video clip below. This young man is definitely on my radar. Keep up the good work Daniel.