1. A method for providing for display an estimated relevance indicator for a result set of documents, the method comprising: receiving, at a computer, a search query, wherein the search query includes a plurality of query terms; searching a database using the search query to identify the result set of documents, wherein the result set of documents are identified based on the search query; calculating an estimated relevance score for the result set of documents, wherein the estimated relevance score is indicative of a degree to which the result set of documents are relevant to the search query; and providing for display the estimated relevance indicator based on the estimated relevance score, wherein the estimated relevance indicator provides a visual indication of the degree to which the result set of documents are relevant to the search query.