Fuente: WIPO "wine" System (1) provides information articles specifically targeted to particular subject matters. A datastream (2) of information, typically discrete articles is output from the internet (3) and processed in a filter operation (4) to select only those items which are relevant to a particular subject area. The resultant articles are published at a website (5) accessible by users (6) who subscribe to the service. When a user (6) enters the website, his activities while on the website are monitored, particularly by noting the articles that he views, and the inspection time taken for an article. The user~s activities are used for determining the rank of displayed articles.