I just stumbled upon Giveaway Scout. At Giveaway Scout you can add your blog to
make the most of your giveaways!
Giveaway Scout is a giveaway search engine. Users subscribe to receive updates on the latest giveaways on the web. Add your blog and your giveaways will be exposed to Giveaway Scouts large network or users.
* Publish your giveaways on multiple channels (The GS web, newsletter, Twitter, Facebook and widget network)
* Get more exposure to your blog and giveaways.
* 100% Free of charge