I don't think it is any more difficult than buying a gift card from any other web site, but I've never actually done it. I would think you could send it directly to me via e-mail. If I win, let's try it!
It's easy to e-mail gift cards. If you can get the winner's e-mail address, you can often send it to them when your purchase the card online. Or, just buy it yourself and then send the code. If it is a physical card, you scratch off the back to reveal the code, but I would think most are electronic.