The drama started back in 2006, when Internet Brands inc. has bought Wikitravel and stuffed it with Google Ads. Several key contributors were against such website monetization and decided to leave the "free" project some years later.
Internet Brands even tried to sue not paid editors, but the claims were dismissed by the United States District Court of Central California few months later.
Since now personal appeals by Jimmy Wales will appear on the header of Wikipedia even more often, as somebody has to pay for one more Wiki anyway"
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