Methods and systems for improved processor efficiency via reductions in repeated calculations are provided. A plurality of candidate sitelinks are identified in response to a search for online content. Each sitelink has associated with it a plurality of candidate creatives with which the sitelink may be presented to the user. The creatives are canonicalized to form clusters of candidate creatives. The sitelinks are also canonicalized. The creatives are matched to the candidate canonicalized sitelinks so as to provide enhanced sitelinks having increased relevance to the user search.