You should visit Wikipedia Watch because they examine the consequences of its massive influence on what passes for reliable information:

“While Wikipedia itself does not run ads, they are the most-scraped site on the web. Scrapers need any content in order to carry ads from Google and other advertisers. This entire effect is turning Wikipedia into a generator of spam. It is primarily Google’s fault, since Wikipedia might find it difficult to address the issue of scraping even if they wanted to. Google doesn’t care; their ad money comes right off the top”.

Please read the whole story here (and here’s why I think you should)
https://tips.zona-m.net/2012/07/if-you-use-wikipedia-visit-wikipedia-watch-first/
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