I found a bug. When I do a site search, it initially says there are more results than the number of pages in my site. However, if I advance to the next few pages of results, eventually the number of results drops to a number smaller than the actual number of pages I have. In other words, its initial estimate of the number of results for a search appears to be wrong. Edit: furthermore, if I click on the page number for results that don't actually exist, it says "we couldn't find any sites containing site:www.bluefuzzywidgets.com"