Less work for catalogers but less useful for readers
The Library of Congress has apparently decided to start calling Scottish literature English. I'm annoyed that it took a days-old Neil Gaiman blog post for me to discover this but even more annoyed that they're adopting this policy. All of the objections raised in the BBC article seem valid to me. It's completely counterproductive to the purpose of subject headings. Further, I like Gaiman's point here:
Scotland is its own country, with its own traditions and its own literature, a literary tradition in English and Gaelic. On the other hand, it's less work for the Library of Congress. But then, they'd have even less work if they just filed them all under Books.