A-Z of Tourism.com
Get the lowdown on Italian social and business customs before you fly out.
http://www.a-zoftourism.com/travel-tip-646-c1-Italian+Etiquette.htm

Crazy Colour.com
An in-depth guide to Italian social and business etiquette.
http://www.crazycolour.com/os/italy_02.shtml

Executive Planet
Italian business protocol.
http://www.executiveplanet.com/business-culture-in/132177274767.html

Frommer's
Advice on how much to tip in hotels, restaurants, taxis, etc.
http://www.frommers.com/destinations/rome/0064020016.html

Roman Homes
Local customs and etiquette outlined.
http://www.romanhomes.com/your_roman_vacation/differences.htm

Virtual Italia.com
Italian table manners.
http://www.virtualitalia.com/recipes/etiquette.shtml

What's New in Italy...
Focuses on the etiquette of shopping in Italy.
http://members.ozemail.com.au/~wnii/Articles/Shopping%20in%20Italy.htm

World Executive
A brief note on tipping in Italy.
http://www.worldexecutive.com/cityguides/rome/tips.html