The three editions of the MSO between 2005 and 2007 have been smaller ones, mostly with just english players participating. I also wasn't there.
In 2005 and 2007 no italians at all, but in 2006 there was Tony Niccoli, an italian player that lives in England.

Dario De Toffoli

ITALIAN MEDALS 2006

Diplomacy - Intimate
1     Tony Niccoli
2     Alain Dekker 
3     Michael Haytack 

Diplomacy - Olympiad Championship
1     Gregory R L Mostyn 
2     Andrew Havery 
3     Tony Niccoli

Entropy - World Championship
1     Demis Hassabis 
2     Tony Niccoli
3     Alain Dekker