Google Notebook (in Labs debuting next week) is the company’s answer to the bookmarking phenomenon. Users can save search results and other content from the Web into Notebooks, which can then be shared (or not) with others across the Web. At first glance it’s hard for me to imagine how this could be especially useful to marketers, though I suppose retailers could encourage users to save product pages to Notebook, in hopes that they’d eventually come back to buy. Marissa Meyer’s demonstration example, in fact, used a shopping experience — in which she’d collect information as she was going through the purchase cycle. The data appears to live online and is therefore accessible from multiple computers. Not sure if there’s a download.