14. The non-transitory computer readable storage medium of claim 11 , wherein the instructions further comprise instructions which cause the one or more processors to identify one or more terms based on content in the displayed document, and wherein the similarity score for the given query completion is based at least in part on similarity between the given query completion and the one or more terms.
14. The non-transitory computer readable storage medium of claim 11 , wherein the instructions further comprise instructions which cause the one or more processors to identify one or more terms based on content in the displayed document, and wherein the similarity score for the given query completion is based at least in part on similarity between the given query completion and the one or more terms. 15. The non-transitory computer readable storage medium of claim 14 , wherein the terms include one or more terms representing a topic of the displayed document.