We love single-serving sites, especially ones that are always adding new content all the while staying within very strict thematic or formal boundaries (like this blog!). It seems like there’s a new one every day (or several), and every week or so one leads to a book deal, so it’s nice to get a big survey of niche-oriented blogs every so often, like mental_floss’s listicle of 28 Ridiculous Niche Blogs, our favorite of which is Bad Spock Drawings. Guess what that site is full of.