In an embodiment, a system is provided. The system includes a ratings database and a website database. A web crawler is provided to crawl review sites and rating sites of the web. The web crawler is further to access data from the web and store data from the web in a ratings database. The web crawler is also to identify links to other review sites and ratings sites of the data from the web, to store the links in a website database, and to identify sites to crawl from the website database. A data analyzer is provided to analyze data of the ratings database and to normalize data from the web within the ratings database on an essentially continuous basis. A data presenter is provided to receive queries from users and to query the ratings database based on queries from users. The data presenter is to present data to a user responsive to queries and to filter data presented to the user responsive to further user queries.