document: Estimating the impressionrank of web pages The ImpressionRank of a web page ( or , more generally , of a web site ) is the number of times users viewed the page while browsing search results . ImpressionRank captures the visibility of pages and sites in search engines and is thus an important measure , which is of interest to web site owners , competitors , market analysts , and end users . All previous approaches to estimating the ImpressionRank of a page rely on privileged access to private data sources , like the search engine 's query log . In this paper we present the first external algorithm for estimating the ImpressionRank of a web page . This algorithm relies on access to three public data sources : the search engine , the query suggestion service of the search engine , and the web . In addition , the algorithm is local and uses modest resources . It can therefore be used by almost any party to estimate the ImpressionRank of any page on any search engine . En route to estimating the ImpressionRank of a page , our algorithm solves a novel variant of the keyword extraction problem : it finds the most popular search keywords that drive impressions of a page . Empirical analysis of the algorithm on the Google and Yahoo ! search engines indicates that it is accurate and provides interesting insights about sites and search queries .
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