"Live" TV broadcasts are also on a delay, so I guess it's all relative. I had a friend who lived near enough to an NFL stadium that you could hear when something big happened and the TV delay made it impossible to enjoy a home game there.
Very minor delay in the UK -- well under 2 seconds from pitch to TV on DTT in the case of the FA Cup. Sure enough to cause some grief when you can hear the crowd, but not enough to get notifications on twitter or whatever.
