We think this will be a very useful tool, but you will have to give up some of your privacy. For many of us, that trade off will make a lot of sense.

Will the social networking phenomenon lessen? I don't think so.

I like to stay in the rhythm of things. My maternity leave will be a few weeks long, and I'll work throughout it.

Before Google, I spent the summer building a program that would look at what websites you would go to and what websites other people would go to - and built a collaborative filtering program that helped you find related sites to look at.

I think Google should be like a Swiss Army knife: clean, simple, the tool you want to take everywhere.

You can't have everything you want, but you can have the things that really matter to you.