Check out this new site, Giveaway Scout, that I found that strictly focuses on giveaways. They have all these contests and giveaways posted on their site that a lot of popular blogs are hosting. So you no longer have to constantly search for giveaways, Giveaway Scout has them all in one place for you to find.
Here's a little more about it.
Giveaway Scout is a giveaway search engine. Our users subscribe to receive updates on the latest giveaways on the web. Add your blog and your giveaways will be exposed to our large network or users.
•They publish your giveaways on multiple channels (Our web, newsletter, Twitter, Facebook and widget network)
•Get more exposure to your blog and giveaways.