It's rarely used except for a few releases. My first use of BD-Live was with The Dark Knight, which was pretty innovative but very laggy. I was on DSL downloading commentaries for like forever and downloading trailers in HD...then on FiOS the speed was ok. Lionsgate used it to for updating weather temps when starting up a bluray. Sony used it for ps3 users downloading demos and such. Could this mean that 4k BDlive might be dead?