but what may be overlooked is something quite simple : a program desiged to scale and record and make searchable the imagination and enormity of human sharing, and mingle that with the robotic crawlers that have overtaken the web.

Yahoo says: Create your own personal searchable webTag and save content that matters to youFind better answers from the people you trustConnect to friends and share what you knowSearch or browse to discover what your community knowsDiscover what the world has tagged and sharedBrowse the 120,873 pages and 35,228 tags that have been shared

Yahoo's Nick Hazell says: "Our revenue comes from a number of sources: media advertising, paid for searches, and our subscription services, where we have about 10 million subscribing customers to various of our premium services."We see all of those businesses as quite complementary, and a range of businesses which add up to the whole and fund the kinds of services that we're able to offer to customers."

Lisa Jones, the editor of Net magazine, says: "Because much of our lives now revolves around web services and things that we can do there, we need to be able to move our information around and not start from scratch every time we want to do a search."So it's increasingly about building this customisable, personalised web interface that remembers us and that we can take anywhere."