Here is the most Comprehensive list of Giveaway Linkups that I could find, pulled together from various sites. So many of the list of linkups I found were a little dated. I hope this helps. Please shoot me an email if you would like to be added. (Note: this list has been updated on 10/20/11)
Sunday
-Coupon Geek
-Deal Seeking Mom
-Couponing For 4
-Look What Mom Found
-The Thrifty Mama
-Moomettes Magnificents
-The Mommy Files
-Give Me Neither
-Love Of Baby
-Cuckoo For Coupon Deals
-The Prudent Patron
-Mrs. Cox Blog
-Sweet Pennies from Heaven
-Real Mom Reviews
-Enter Online Sweeps
-Blessed Beyond Words
-Minnesota Mamas Must Haves
-Sugar Pop Ribbons
-Saving with Wendy
-5 Minutes for Mom
-Family And Life In Las Vegas
-For the Love of Baby!
-Great Contradictions
-Miki's Hope
-My Crafty Life
Monday
-The Morris Bunch
-Moms Best Bets
-Mommy Gaga
-Smart & Trendy Moms
-Chubby Cheeks Thinks
-Pink Coupon Cafe
-Social Media Junkie
-The Kings Court IV
-Jabbering Jesse
-Real Simple Saving
-Born 2 Impress
-Thrifty Jinxy
Tuesday
-Outnumbered 3 to 1
-Mom Advice
-Mrs Nespys Frugal World
-Frugal & Fabulous
-Two of a Kind
-Frugal Follies
-A Frugal Chick
-Society of Socialopreneurs
-Woman Tribune
-Home Grown Families
Wednesday
-Mommies With Cents
-Dealectible Mommies
-Smart Cents Mom
-Frugal Living & Having Fun
-I Could Use A Deal
-If Mama Ain’t
-Island Life (scroll down to WEEKLY COLUMNS)
-J Leigh Designs
-Wee Finds
-Money Saving Maine-iac!
-A Mommy’s Blessings
-Frugal For My Friends
-Nickels-N-Dimes
-A Savings Wow
-Locomotions of Expressions
-Stockpiling Moms
-Coupon Clippin’ Mommy
-Mrs. Money Saver
-I Could Use A Deal
-Cha Ching Queen
-Smarts Cents Mom
-Sarah’s Linky
-All Ruby Cakes
-Hand Made Shopping Guide
-Measuring Flowers
Thursday
-Go Graham Go!
-Jolly Mom
-The Shopping Mama
-Baby Loving Mama
-Saving Cents With Sense
-Piece of Me
-ATL Dealfinder
-Social Media Junkie
-Coupons are Great
-Serryus Mama
-Christian Frugal Mama
-Lemon Tree Cards
-To Be Thode
-The B Keeps Us Honest
-Mom's Misc Adventures
-A Daily Dose of Toni
-Cocktails with Mom
Friday
-Bonggamom Finds
-Flying Giggles & Lollipops
-A Hens Nest
-A Renaissance Woman
-Rachels Giveaways
-Sarah’s Blog of Fun
-The Neat Things In Life
-Frugality is Free
-Break Through Your Money
-A Heart Full Of Love
-Bargain Briana
-Christian Clippers
-Just Add Cloth
-Nanoosa Organizations
-Mom For A Deal
-Mom Start
-One Busy Moma
-Shaina's Deals
-Table for Five
-The Dollar Chaser
-The Mama Report
Saturday
-MamaBuzz
-Maven of Savin
-Mom Saves Money
-Contest Corner
-Mommy’s Hangout
-A Frugal Friend
-A Nut In A Nutshell
-Happily Blended
-Busy Working Mama
-Bargain Fun
-Fun Being Frugal
-Mommy’s Hangout
-Grandma Sez So