Actually, just one today, and it’s not really a word or a phrase. It’s this: all lowercase everything all the time. You’re off the hook, E.L., a writer I know—I just decide to forgive him, because his plea for understanding of the lowercasing is a signature to all his emails, which indicates forethought and genuine regret. PK, you too can breathe easy as far as I’m concerned, since you had a well-researched esoteric-typographer rationale (remind me what/who it was so I can link to it). IMs—they call for lowercase; speed is paramount, so spare your precious bodily shift key. The occasional quickie email. Of course! Of course, me too. But real emails, which are, after all, letters, deserve real capitalization. Especially proper names. It’s all we have in the end, after all. You don’t want your headstone all lowercase, do you? I thought not.
 
I know this is a sensitive subject, and I expect abuse. Nevertheless, I think if you’re going to observe the conventions of sentence-writing at all, you should also use the proper capitalization that those poor elementary-school teachers ground into you till they were themselves ground down to little bits of chalk and Cheetoh dust. And if it’s a business email or an email to anyone you like even remotely, and might even want to bowl over, and you’re over the age of 17, for the love of Fowler please use apostrophes where they’re needed. You’re probably not a whimsical Modernist poet or a pioneer black feminist or so self-effacingly humble you can’t even cap “I” or a Rodeo Drive blonde on a Sidekick who doesn’t know any better (ground-down educators notwithstanding). So…enough lowercasing everything. Especially names. Just do that much for me.