answer:Ha! Yes, people still care, and by “people,” I mean “English teachers and proofreaders.” The distinction between the two is observed in every print (and web) publication, and I think messing up the two in something that’s intended for publication (even in a “professional” blog) is embarrassing. But is its/it’s still an embarrassing mistake to make in casual usage? I tend to think it still is. It might be rude or annoying to correct someone on that distinction (although maybe it’s actually useful!) but… I like to think that it still makes you look dumb to confuse the two.