Well ever since I knew google, I got to know about Wikipedia. in school days search like solar system, trigonometry topics, chemistry formulas and many used to to happen. every time Wikipedia was one of the search result. Wikipedia has helped a lot, from school, college, research to general knowledge it has everything. I am happy with this website. now I am a member of Wikipedia and sometimes I give suggestions or add some some suptopic recommendation on Wikipedia. I define it as "Wikipedia - The Growing encyclopedia"