pgn4web is being used at the 4th London chess classic 2012.
The 4th London chess classic takes place 1st to 10th December 2012: Magnus Carlsen, Levon Aronian, Vishy Anand, Vladimir Kramnik, Hikaru Nakamura, Judit Polgar, Mickey Adams Luke McShane and Gawain Jones play in a 9 round 9 player event.
Several other events are running in parallel, including a women's invitational with 10 players, a FIDE open (with 12 GMs and a total of 237 players), weekend opens, rapid/blitz events and simuls from Nigel Short.
pgn4web is used for both live games broadcasts (with a flash-free page suitable for mobile devices) and for games archives.
PS: browsing the tournament results you can spot the main pgn4web author taking his chances in the FIDE open.
