of course it's got all its search advertising, but larry is a brilliant engineer, and he didn't run it for the last decade, and i -- you know, it's a question, an open question whether he's really the right guy to be running it. >> who would be the right guy if not larry page and, sergei, is he the right guy to run it? >> i don't think so. sergei again is a great and brilliant engineer. my sources within google are saying that, look, eric did a great job as ceo, and it will be a loss to see him step down as that ceo. now, it seems that we are going to have larry as ceo of they've said it, so he can do the job that he can do. what's unknown is, is he going to be that leader of a public company that google. >> what is the biggest challenge for google going forward.