Joining is pretty easy. All you need is a Paypal account, a blog, Facebook account, Twitter, and GFC to be able to participate. And I'm pretty sure most of my fellow bloggers have all of these ready.
Next, participants should blog about the giveaway, which is exactly what I'm doing right now. The blog post must contain the link to HappyCaity.com, the contest badge code, and the sponsors’ links code. Here are the sponsors for this giveaway: