Vuvuzela

If you know what a vuvuzela is, then please let me know what is the point of them.

They are ruining the 2010 World Cup coverage with their incessant and irritating buzzing noise. They have nothing to do with African heritage. Is it just to give some commercial incentive to pirate manufacturers?

And, if you don't know what a vuvuzela is, then I envy you.