New giveaways to enter:
Sweeps: Win $15,000 at myRecipies - enter daily
$2500 giveaway at Tada - enter once
$1000 ideeli giftcard - you have to sign up for ideeli, a sample sale site, if you haven't already. This giveaway ends soon!
REVOLVE facebook favorites giveaway - add stuff to your REVOLVE clothing favorites list, as one winner a day gets something from their favorites!

Giveaways I've mentioned before:

Win a $1000 urban outfitters giftcard - enter daily until Dec 23

Add an item to your victoria's secret wishlist DAILY to be entered to win $250 VS giftcard until Dec 21

6pm.com holiday blitz - only need to enter once

The Beauty Bean's 17 of giveaways - on facebook and twitter

Denim Debutante's $200 Beyond the Rack GC giveaway! Enter now!!!

All of popsugar's giveaways, which are conveniently located on one page! Make sure you're logged in for your entry to count!

Good luck!