for like three days i was like i don't need to hear about my friend's sandwiches. >> do i really need to know joe in seattle is having oatmeal for breakfast this morning? >> why are you a tweeter? >> to me, it's been helpful to really kind of cut out the middleman and the middleman has been the media. it's given me a chance for people to really get to know the real me. >> the conciseness enfrsed by that 140-character limit was really attractive. you didn't have to read and scroll. in the past year, the number of twitter users grew 343% with nearly 2.5 million people on the site now and i am -- i'm one of them. >> twitter became, for many of us, a dominant platform for communication day in and day out. that is part of the magic working on the internet. you just really never know how this stuff's gonna play out. >> big news in the compute world. steve jobs, who turned apple to from a boutique computer company into a technology behemoth announced he is taking a leave of absence until june.