From The Wall Street Journal:
When Twitter users open their home pages, they are greeted by an inset box at the top of the screen in which three words appear in gray type: “Who to follow.”
Correct grammar? Certainly not.
Plenty of Twitter users, including members of the blue-checkmarked elite, have complained about that oversight. “The ‘whoms’ put up a good fight, but we ultimately opted for a more natural cadence and the ‘whos’ won out,” says Twitter spokeswoman Brielle Villablanca.
This sort of grammatical nonchalance doesn’t sit well with many people, among them Thomas Steiner, a systems engineer at Google.
Mr. Steiner, a German who lives and works in Hamburg, says Twitter’s language annoys him. “As a non-native speaker, I make a lot of effort to learn the language, and the people who should know better don’t,” he says.
In his spare time, he wrote a free browser plugin that automatically corrects the “who” to “whom.” He “fixed the internet,” gushed one user of the program.
Mr. Steiner has a kindred spirit in British scriptwriter James T. Harding, who recalls that, as a teenager, he used to go through music videos and correct the soundtracks. That was around the time he established an imaginary group called the Grand Order of the Whomic Empire. Today, the case-sensitive Mr. Harding runs a lightly visited Facebook group, the Whom Appreciation Society.
As for when “whom” is appropriate: It is the correct choice if the word is the object of a preposition or a verb, such as in Hemingway’s “For Whom the Bell Tolls.” The choice should be “who” if the word serves as the subject of a sentence or clause.
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There could be other advantages, if a 2014 Wired article is to be believed. The magazine sifted through thousands of profiles at dating sites Match.com and OkCupid trying to figure out what sorts of things made someone a more desirable date. Among other tips for success—be into yoga, don’t mention religion, learn to surf—Wired found that men who used “whom” had 31% greater success at getting dates.
Link to the rest at The Wall Street Journal (Link may expire)