If I write a detailed explanation of some industrial electrical detail in some electrician forum, perhaps one or two people will upvote it. If I write some very general, snarky comment in a general forum, I'll get hundreds to thousands of upvotes. Blogs are the same. An excellent niche blog might churn along for many years, but few will ever know it exists, and it won't get on one of these surveys. A clever, popular blog, written to get big quickly, and heavily promoted by the author, will get on all the lists. And most of them won't last five years.