Just come back from a great talk by Brian Levy, HP’s Chief Technology Office for Communications & Media. Amongst many useful insights he offered were

• there is a very real possibility that current growth in video-based internet traffic will cripple internet capacity [driven e.g. by bit-torrent and similar, as used by BBC iPlayer – basically uses loads of our PCs to help supply content on to others, I think] 
• … and it’s not clear who will get paid how for resolving this – ...