I keep forgetting, but
this obnoxious article has persuaded me I should stop typing two spaces after periods, the way I was taught. I guess that means no double spacing after colons as well? Seriously the tone of this article is annoying. Maybe if you are going to preach about type you have to make me want to smack you? (And when was the last time I said that about anything? Sheesh.)
Also this, from the comments there: "Take a look at the writing tips in a standard middle-grade English textbook. Plenty of lessons (most of them written by current or former teachers) still caution students to avoid split infinitives and sentence-ending prepositions, even though neither taboo has a basis in grammar or idiom. As far as anyone knows, the rules are the product of a few idiosyncratic 19th-century stylists whose opinions just happen to have been canonized by tradition."
Hah! Take that, last know-it-all that tried to edit me!