There appears to be several websites that seem to be allowed to link spam Wikipedia, even though the website have little-to-no value that couldn't be realized with a link to a more legit source. For instance, hockeydb has links on every NHL player's Wikipedia page. This site is basically a copy of the information available at NHL.com and other places, except that it has popups and ads all over the place. Quite often the same information is found on NHL.com and a redundant link is provided for both. Wikipedia editors have been going around deleting my links to legitimate sources for more than a year, yet for some reason others are allowed to link spam Wikipedia with low value pages full of popups and ads.