While I was probably lucky to notice the April 1 date first and, as it happened, wasn't fooled, I was fooled by articles on another website, Motley Fool, that makes investment recommendations, etc. They ran an article that Warren Buffet bought Krispy Kreme doughnuts, amongst 14 others, and I actually considered running out and buying the stock.
Made me wonder how liable a website operator might be for April Fool's Day articles that people may have relied upon to their detriment. Just a thought.
Anyone ever sue Orson Welles for his "War of the World's" Martian radio address years ago?