This was taken from the BBC webby.
"With the teams facing a penalty shoot-out as the game was drawing to a close, Spain midfielder Andres Iniesta smashed in a half-volley - which ultimately won the game for Spain - leaving the Dutch incensed..."
You'd think they would know better.
This was not a half volley. A volley is struck without bouncing. A half volley is struck on the bounce. It's perfectly Sybil, Simple!