$1 per bag

CNN

CNN/Money: How much to tip

$1 per bag for bringing luggage to your room (but a $2 minimum if you have just one bag)

CNN/Money: How much to tip

$1 per bag for help with luggage; $1 per person for hailing a cab

HowStuffWorks.com

HowStuffWorks "Airport Tipping"

Bellhops - At least one dollar for each bag they carry (more if the bags are especially large, heavy or awkward to carry), and more if they go above and beyond the call of duty.

manofthehouse.com

A Tip About Restaurant Tipping | Mans Guide to Proper Tipping

Tipping $1 per bag is routine for this service.

theaustintimes.com

A tip about tipping | The Austin Times

Tipping $1 per bag is routine for this service.

$1 to $2 per bag

Askville.amazon.com

who do you tip amd how much?

$1 to $2 per bag, $5 minimum.

Yahoo Answers

What is a good tip on a 17 dollar pizza delivery? - Yahoo! Answers

$1 to $2 per bag, $5 minimum.

getrichslowly.org

Basic Tips on Tipping: How Much and To Whom?

$1 to $2 per bag, $5 minimum.

artofmanliness.com

Gentleman’s Guide: How Much Should I Tip? | The Art of Manliness

$1 to $2 per bag they lug for you.

azildalions.ca

Helpful Hints and Tips

$1 to $2 per bag, $5 minimum.

niketalk.yuku.com

How much do you tip the Bartender? in General Forum

$1 to $2 per bag they lug for you.

artfulcodger.com

The Artful Codger » Blog Archive » How much am I supposed to ...

$1 to $2 per bag, $5 minimum.

frugallawstudent.com

The Frugal Law Student | 2007 | October

$1 to $2 per bag they lug for you.

The Frugal Law Student | Holidays

$1 to $2 per bag they lug for you.

The Frugal Law Student | The Ultimate Tipping Guide

$1 to $2 per bag they lug for you.

yearnforgod.org

Yearn: Manvotional Part 3: Tipping

$1 to $2 per bag they lug for you.

sclohoreally.com

ScLoHo's Really?: 06/22/08

$1 to $2 per bag they lug for you.

findalink.net

Tipping Etiquette Guide at FindaLink.net

Bellman - When he helps you with your bags, tip $1-2 per bag.