Abstract: Present invention allows a user to rank web-documents that he or she accesses with a web-browser. Ranking of web-documents is facilitated by a client-based ranking module, a software program functionally compatible with a user's web-browser. A user sends voting information together with an identification number unique to each version of the ranking module and the URL of currently active web-document to Modelane ranker system for processing. While voting for the content quality of a web-document, a user is limited to only three options: positive, negative, and zero. Scores for web-documents are calculated in such a way as to give each vote an equal opportunity to affect a score. The method of score calculation is designed to separate the scores for each individual web-document as much as possible. The method allows systematic comparison of web-documents based on popular opinion of their contents and precise ordering of web-documents on a linear scale.