WRS is a search engine that returns only results from websites that Wikipedia policies mention as "reliable", such as nytimes.com or ieee.org. So next time you add a fact to Wikipedia, you can easily find a source to confirm this fact, and write it as a reference. WRS can make a reference search very efficient, but it is not a substitute for critical analysis. We are working hard to make sure WRS shows only reliable pages, but search results always contain some irrelevant or unreliable pages. Please identify within the results which page is the best reference for your fact. Always ask yourself whether the web page you found is indeed a valid reference before inserting it into Wikipedia. "Reliable" is not really biased here, some websites are clearly accepted as reliable sources, the list is based on Wikipedia consensus. It is impossible to write the list of all reliable websites, but a hundred of reliable websites would be enough for general topics. The list of reliable websites can be refined by Wikipedians over time. A difficult task is to distinguish between various sections of a website (for instance between news and forum).