Valve appeals Left 4 Dead 2 ban

According to Internode's Games.On.Net, Valve has already appealed the ban the OFLC has made on Left 4 Dead 2. Valve has also provided details on the ratings that other territories have provided:

PEGI (continental Europe) - 18+

ESRB (North America) - M

CERO (Japan) -Z (corresponds to Mature in US)

IFCO (Ireland) - Approved the title for classification.

USK (Germany) - 18+

Singapore - Mature 18

FPB (South Africa) - 18+

KGRB (Korea) -18+

The UK and NZ are yet to complete classification of the game. Most it seems have given the game an R18+ rating which is sad since Australia doesn't have one. However, the US didn't even give an AO (Adults Only) rating to the game which would have prohibited the game for play to anyone younger than 18 years old. Instead they gave a "Mature" rating which from what I can tell is only a recommendation that 17 year-olds and above play the game!