Ted Dunning wrote:
One way that this sort of statement can come out of a marketing person's mouth is if you scan 10 billion pages, decide that 95% of them will never appear on any results list and only actually index 500 million.
The classic way to boost your count by an order of magnitude is to counts a page as "indexed" if you've only indexed an anchor to it, but not actually downloaded and indexed the content of the page.
Doug