Who really wants "live" content?
BD Live is going to be as pointless as internet content was in HD DVD.
Most discs won't bother with at all, and those that do will probably just direct you to a generic studio portal or store where you'll be lucky if you can download a handful of trailers. If a disc does more, it won't be much more, probably amounting to some internet enabled games, or twitter like blogs, some token additional content that could have been stuck on the disk or whatever.
Chances are that if you have an internet connection that you already have a PC that can do all of the above and much more, so what's the point?
I can only see BD live becoming a compelling feature if studios cultivated loyalty by offering a free "show/movie of the week" downloads or similar for their users, but what are the chances of that happening?
I am more interested to know what happened to mandatory managed copy and when the PS3 is going to offer the facility to transfer a portable copy of a movie to a PSP. Now *that* will be a useful feature.