8. A system non-transitory computer readable storage media having computer readable code thereon for dynamically modifying search objects comprising code for: receiving one or more keywords for use as search terms from a user; providing a first set of search result objects; monitoring which document said user clicks on in interacting with said first set of search result objects; compiling information to infer user intent based on said clicked documents; upon said user clicking to return from said document to said set of search result objects including said document, immediately automatically re-ranking said first set of search result objects based, on said inferred user intent, so that a user clicking on a single document from said first set of search result objects results in a re-ranking of said first set of search result objects, so that upon said user returning from said document to said first set of search result objects including said document the re-ranked results will be visible; doing said re-ranking in a same browser session and on the existing search results page, without the user having the reload said search results page; and moving forward a number of documents based on a plurality of possible inferences of user intent; where said compiling of information determines that there are multiple possible sub-contexts for the user's intent, represented as subordinate keywords with significant positive weights, and further comprising displaying to said user the to re-ranked document from each of said sub-contexts based on different combinations of said subordinate keywords.
8. A system non-transitory computer readable storage media having computer readable code thereon for dynamically modifying search objects comprising code for: receiving one or more keywords for use as search terms from a user; providing a first set of search result objects; monitoring which document said user clicks on in interacting with said first set of search result objects; compiling information to infer user intent based on said clicked documents; upon said user clicking to return from said document to said set of search result objects including said document, immediately automatically re-ranking said first set of search result objects based, on said inferred user intent, so that a user clicking on a single document from said first set of search result objects results in a re-ranking of said first set of search result objects, so that upon said user returning from said document to said first set of search result objects including said document the re-ranked results will be visible; doing said re-ranking in a same browser session and on the existing search results page, without the user having the reload said search results page; and moving forward a number of documents based on a plurality of possible inferences of user intent; where said compiling of information determines that there are multiple possible sub-contexts for the user's intent, represented as subordinate keywords with significant positive weights, and further comprising displaying to said user the to re-ranked document from each of said sub-contexts based on different combinations of said subordinate keywords. 9. The computer readable media of claim 8 further comprising code for providing a first set of advertisement objects related to said first set of search result objects ranking and displaying said additional objects by replacing or supplementing ads with more targeted ads.