Hello!
I bit on your project because I happen to love funny e-cards! So congrats on your idea, I hope everything goes well!
So, about the project, I trust you know there's no recipe for something to go viral, anything might work. A company might spend thousands trying to make something go viral then the simplest thing works! It's a no guarantee deal.
I started my own company back in 2006 and we started in this field marketing and advertising. We have managed also quite a few fanpages. So I do have some experience, however am not an expert in traffic, hence the small fee I have proposed.
I do hope to have a chance to work with you and see how things go. Let's talk more about your project!