A-Z of Tourism
Czech business and social etiquette explained.
http://www.a-zoftourism.com/travel-tip-1407-c1-Czech+Etiquette.htm

Czech Center - New York
Do's and don'ts in Prague.
http://www.czechcenter.com/Travel-Practical.htm

Essential Prague
An essential guide to restaurant etiquette in the Czech republic that covers everything from the menu format to settling your bill.
http://www.jasoncholt.com/prague/prahafood.html