GoPrague.org
Internet cafe list.
http://www.goprague.org/prague_internet_cafes.htm

Pell Mell
Internet cafes in Prague rated and reviewed.
http://www.pell-mell.cz/essentials/Food_&_Drink/Internet_Cafes/

Prague.cz
A shortlist of cafes where you can hook up to the Net.
http://www.prague.cz/inetcafe.asp

Travelguide.cz
A nationwide index of Internet cafes.
http://www.travelguide.cz/specguide/icoffies.asp