Etiquette Hell
Not only does this site tell you what to do in a given situation, it also includes horror stories of how it was done badly.
http://www.etiquettehell.com/

The Emily Post Institute
Provides advice, books, articles, seminars, and discussions on etiquette for the way we live today.
http://www.emilypost.com/

Soyouwanna.com
Good table manners; this article explains, in a straightforward manner, how to fit in at a polite dinner by using utensils correctly and eating properly.
http://www.soyouwanna.com/site/syws/tablemanners/tablemanners.html

Miss Etiquette
Answers to questions on etiquette and manners. Advice on dating, flirting and party etiquette.
http://www.miss-etiquette.com/

Advice with Dr. Dave and Dr. Dee
Frequently asked etiquette questions, from table manners to party etiquette.
http://www.drdaveanddee.com/etiquette.html

EtiquetteGrrls.com
Includes advice column, letters, information about their book, profile, rhetorical questions and links.
http://www.etiquettegrrls.com

Table Manners and Dining Etiquette
Ball State University Career Center offers advice on social etiquette for refined social and business situations.
http://www.bsu.edu/students/careers/students/interviewing/dinetips/

Dear Social Grace
Features etiquette advice column and other etiquette information written by etiquette writer Charles "Social" Grace.
http://www.dearsocialgrace.com

Ladies Home Journal: Manners Guide
Find out how to teach children proper etiquette and good table manners.
http://www.lhj.com/home/Manners.html

National Courtesy Council
Personal comments on being nice to others.
http://members.aol.com/rutheruthe/myhomepage/index.html

Tips4me: Etiquette
Information and tips on etiquette topics. Including business etiquette, social etiquette and dining etiquette, as well as tips by mail and tip of the day.
http://etiquette.tips4me.com/

Rude Busters
Etiquette resources for a variety of topics and forms of rudeness.
http://www.rudebusters.com/

Cell Phone Etiquette
A list of dos and don'ts for young adults.
http://teens.aol.com/style/cell-phone-etiquette

Business Graces
Articles in business etiquette and social graces.
http://www.businessgraces.com/main.php?page=articles.php

Etiquette Knolwedge Base
Common questions and answers about table and dining manners, social graces, and business etiquette.
http://www.mannersinternational.com/etiquette_tips.asp