What blogs do you frequent for giveaways, contests, or the like?

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I have come across so many great blogs that frequently feature blog giveaways or contests. For instance I visit Sweeties Sweeps, Life's A Charm, Blog Giveaways, Blogaways, Free Blog Giveaways, The Lucky Ladybug, country mouse, city mouse, Everyday Giveaway, and luckycanuck.blogspot.com for my fix of giveaways and contests. How about you? Where do you frequent for great giveaways and contests to win free stuff?