Blend in Like a Local
Brush up on local customs and etiquette.
http://www.blendinlikealocal.com/

C'est So Paris
Tongue-in-cheek guide to French mannersims.
http://www.cestsoparis.com/attitude-game.php

Let's Go
Hints on how to blend in with the locals when in France.
http://www.letsgo.com/PAR/01-OnceInParis-111

Lodging-France.com
Explains when tipping is expected in France.
http://lodging-france.com/paris-info/parijs-practtips.htm

Magic Paris
Hints and tips on French business etiquette.
http://www.smartweb.fr/SurvivalTips/STipsFDoingBusiness.asp

Paris On-Line
Advice on how much to tip in France and when.
http://www.paris-on-line.com/eng/turisme/pracinfo_argent.htm

Paris.org
A tongue-in-cheek guide to etiquette on the Paris Metro.
http://www.paris.org/Kiosque/sep00/metro.html

Parisinfo.com
Tipping and social practices in France explained.
http://www.parisinfo.com/guide_paris/rub5956.html

Things 2 Do in Paris.com
Contains information on everything from opening hours and electricity voltage to tipping and public holidays.
http://www.things2doinparis.com/CityGuide.php/category.26#26

Virtual Tourist
Tips on tipping in Paris courtesy of fellow travellers.
http://www.virtualtourist.com/vt/18308/a/1914/

Worldwidecat.com
Consult the forums on this website for tips on tipping in France.
http://www.worldwidecat.com/travel/paris/parisinfo.htm