1. A method for determining a recrawl schedule of items on an intranet using a search appliance, the method comprising: estimating, using a search appliance installed on an intranet, a change period for items on the intranet using a history of crawl information for the items, the change period for an item being a frequency of change in content of the item; calculating, using the search appliance, a crawl period for each of the items, the crawl period for an item being set relative to the change period for the item; determining, using the search appliance, whether to adjust the calculated crawl period for each of the items using adjustment criteria, wherein the adjustment criteria includes a combination of an importance rank for an item and a list of hints, wherein the list of hints provides crawl periods for items that include information that match a hint from the list of hints; adjusting the calculated crawl period for selected items determined for adjustment using the adjustment criteria including when the selected items include information that matches a hint from the list of hints and the calculated crawl period for the selected items exceeds a threshold for the crawl period associated with the hint; and creating, using the search appliance, a recrawl schedule of the items on the intranet using a recrawl time for each of the items, the recrawl time for each of the items being based on a last crawl time and either the calculated crawl period for the item or the adjusted crawl period for the item.