my full name is christopher isaac stone. i couldn't say christopher, i said biz bur. it kind of sounds the same. it stuck and i tried to go by isaac most of my life and do i in some places. but biz, other people find out people call me biz they want to call me biz. tavis: it is reported so much the success you've had and some places been reported. the back story was. tell me what you were doing. tell me your back story prior to twitter. >> before, i was working at google and before that another start-up. i don't know how far back you want to go. i was at a startup that was a rival startup to my current cofounders startup which is called blogger. we knew of each other through the internet. i left mine. he sent me a note and said why don't you join us. that's when we actually met. originally sort of an arrival way. and then we became colleagues at google and we looked working together so much, that we both left google and we started working on another startup that was a podcasting sartup that had to do with audio on the internet. we weren'ts as interested in thats as we