A picture might be worth a thousand words, but add a cute cat and a funny caption, and you apparently have something much more valuable. A company called Cheezburger Inc., famous for a site dedicated to these so-called LOLCats, said Tuesday that it won a whopping $30 million in funding — which it will use “to become the largest humor network in the world.” Cheezburger, which has been around since 2007, also publishes more than 40 other sites, including the FAIL Blog, which provides photographic evidence of human stupidity, usually captioned with the simple word: “Fail.” The funding round is...