This is exactly what I was looking for. One place to be able to create all of my promotions and contests and stuff. It's super easy, good interface, and fast. They also have live chat support if you have a question. In fact they were very helpful when I had some questions.
My first campaign using this plugin was a sweepstakes that I ran on my Facebook Page and blog. I ended up getting a lot more people participating in it than I had expected. I suppose its because every time a new user joins in, an message goes to their friends on Facebook as well, inviting them to join in my campaign.