how to know if keyword and page are relevant? if a link with warcraft as anchor text to page which are game content but no "warcraft" in it. does google take relevant ? if many link to a page with "warcraft" as anchor text. but the page has not "warcraft" in it. if the page link to a warcraft site, is the page relevant to the warcraft site?
in my opinion, google use the words on both web sites to check the relavance. if a page does not contain "warcraft", it will not be related to warcraft