Planet13 - 10:29 pm on Aug 7, 2013 (gmt 0)
I haven't heard anything about links to wikipedia hurting a site.
But I wonder how much they help your visitors?
Maybe instead of linking to wikipedia, it would be a good idea to find the site that the wikipedia article references. I say that partly to help out other webmasters, because if you link to a wikipedia page, that page rank doesn't get flowed to the external pages that wikipedia links to since wikipedia uses nofollow links.
also, I think you people will see you as more of an authority if you link to the direct source instead of the wikipedia page.
for example, if someone were searching for SE information, they would probably expect your page to link to page from Matt Cutts or Hone Mueller or webmasterworld than to wikipedia pages.
Just my two cents...