I really don't think anybody will actually blame the vuvuzela's for a loss, it's just that it can disturb communication for both parties. About the home field advantage, they use the vuvuzela at every match not just S.Africa's. I'm sure any other team at the tournament could do without the vuvuzela's.
Robin Van Persie stated he didn't hear the referee when going through while being on offside.
If this annoyance results into receiving cards, it should be banned because it is hindering the game.
For now they should switch the background sounds off, without any doubt.
Vuvuzelas do NOT create any ambiance. It is the same musquito zooming about on the same tone for 90 minutes. That's not atmosphere.
I was watching The Netherland's first game on and off. If I didn't check at the moment they scored, I wouldn't have known. The vuvuzelas do NOT go any louder or softer when a good action is shown or when someone scores (only if it is against South Africa so I hope they lose their last game in a humiliation fashion). The commentator for that game dislikes The Netherlands so he too talked very monotonuously which ment there was absolutely no animo ON the field (vuvuzelas being the same tone all the time) and OFF the field (commentator displaying no emotions).
When "non-African" (broad generalisation) supporters are "at work" they sing and dance and at least cheer loudly for a good action or a goal. Nothing monotone about that!
They interviewed one of the two "inventors" of that thing and he said that we should respect their way of celebrating and that they (in return) do not ask that we stop dancing and singing... at least that dancing and singing barely lasts the full 90 minutes and at least goes easier on the ears!
It surprises me African football fans aren't deaf.
__________________ Kyuzo: Don't you see? A real sword will kill you. Mr. Earl Brooks: If I were here to kill you, you would already be dead. Mercedes: My mother told me to be wary of Fauns. Mr. Le Chiffre: No, I believe in a reasonable rate of return. James Bond: Now the whole world will know you died while you were scratching my balls!
They are annoying at first (sounding like a constant lower-pitched hum from a colony of Bees), but you get used to them eventually.
We already have people chanting, and using drums, so meh.
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I don't mind them at all, they give atmosphere to the games that I'm not used to.
However, today at Starbucks, I heard a man say to someone else: "You know what I think? They should ban goddamn vuvuzelas because they sound like Venezuela"