Is it really this easy to become ordained as a minister?

For a while now, I’ve wanted to become an ordained minister so I can perfrom weddings for friends, should such an occasion arise. I found this site where, supposedly, becoming ordained is just a few keystrokes away.

I want to know if it really is that easy. If I become ordained through this website, will I really be able to legally perform weddings? Is there a catch that no one knows about until after they’ve signed up?