Google notebook is an application from google to essentially jot down all that you get while browsing the web. I use it extensively to note down the sites and some data that I find while surfing. It is not as good as other competing products but still I trust google for developing its applications over time. Thankfully they have updated its interface making it easy to sort as well as add new notes! The new interface it slick and is a lot more usable. I hope in future they will work towards integrating it well with other google products!