25. The digital search system of claim 17 wherein the task related filtering and ranking component calculates a similarity between keywords associated with the current task and words associated with a resource referenced in the initial search results.
25. The digital search system of claim 17 wherein the task related filtering and ranking component calculates a similarity between keywords associated with the current task and words associated with a resource referenced in the initial search results. 26. The digital search system of claim 25 wherein the task related filtering and ranking component derives the words associated with the resource referenced in the initial search results by extracting keywords from the resource.