I was watching Game of Thrones yesterday when I noticed one of the characters utter the phrase "I could care less"
Now, why is this phrase becoming more prevelant?
It's "I couldn't care less"
By saying you could care less, you are indicating that not only do you care but you care quite a bit.
I know, Game of Thrones isn't exactly a masterpiece of writing, but I still expect more from "professionals"