14. The method of claim 9 , wherein identifying properties of the respective document comprises identifying properties selected from the properties consisting of: a topic associated with the respective document, at least one product feature extracted from the respective document, an author of the respective document, and an age of the respective document.
9. A computer-implemented method for providing personalized information services to a user, the method comprising: displaying a web page using a browser program running on a computer; monitoring user interactions with the web page while the user is engaged in use of said browser program; analyzing the monitored interactions to determine documents of interest to the user; estimating parameters of a user-specific learning machine based at least in part on the documents of interest to the user; selecting a plurality of documents related to said web page, said relation based on said web page and, for each respective one of the plurality of documents, an estimated probability P(u|d) that the respective document is of interest to the user, wherein the selecting step of said plurality of documents comprises, for each respective one of the plurality of documents: identifying properties of the respective document, and applying the identified properties of the respective document to the user specific learning machine to estimate the probability that the respective unseen document is of interest to the user; and presenting information concerning at least some of the plurality of documents to the user via the browser.