9. A non-transitory, computer accessible memory medium storing program instructions for customizing a search engine, wherein the program instructions are executable by one or more processors to: receive user input from a user providing a first search query to a search engine, wherein the user input is provided to a first website and wherein the search engine is specific to a second website, and wherein the user is an administrator of the second website; provide a first plurality of search results based on the search query, wherein the first plurality of search results are displayed to the user via a first graphical user interface on the first website; receive input specifying a modification to the first plurality of search results, wherein the input is provided to the first website, wherein the input specifying the modification to the first plurality of search results is based on receiving user input to the first graphical user interface, wherein receiving the user input to the first graphical user interface comprises: receiving first user input to the first graphical user interface to add a first search result, wherein the first search result was not comprised in the first plurality of search results; displaying a second graphical user interface to search for the first search result; receiving second user input specifying a second search query to search for the first search result; providing a second plurality of search results in response to the second search query; receiving third user input selecting the first search result from the second plurality of search results to add the first search result to the first plurality of search results; automatically modify the search engine based on the input specifying the modification to the first plurality of search results, wherein the modification to the search engine is specific to the first search query, and wherein the modification applies to all users of the search engine.
13. The non-transitory, computer accessible memory medium of claim 9 , wherein the input specifying the modification to the first plurality of search results further specifies removal of a first search result.