Website of the week – Wikipedia
Wikipedia must be one of the largest websites in existence today. It is an online encyclopedia in which registered users can edit pages themselves, although it is moderated by a large groups of volunteers, each responsible for a section or subject.
At the last count it contained over 340,000,000 pages! Anything you need to know, you can be fairly sure to find it on Wikipedia.
Keywords on pages link through to other pages so you can browse the site for hours without performing a search at all.