Where do you go to find giveaways to enter?

Im trying to figure out what the most popular places are for listing (and entering) giveaways and Im also just curious!

What kinds of directories do you search to enter giveaways?

Here are a couple of my favorite places:


www.onlinesweepstakes.com (I list them but dont search there)

5 Minutes for Mom (Sunday link-up)

Where do you link up or find giveaways to enter?