But the fun starts when you add search modules for web search, image search etc. If you click on Search, you'll get results from all the search engines and for all the search flavors simultaneously. To see the snippets, you have to hover over each search result, but that's the price you have to pay in order to see all this information in one place.
I know what Google would say: "but we have Google Ajax Search API", and it's very nice, but Netvibes' solution is simpler and works for almost any module.