You also get publicity, your name and image all over the place... it's a fair trade, one image for publicity, possible sales on your site, bragging rights.
That's a myth Christina :/
Go up and read what Edward just posted from TWC. They clearly won't be providing a hyper link to your website, they'll be using it at your expense to promote themselves, and don't expect them to credit you.
It sounds like it is a risk your willing to make, and your free to decide on your own. I wish you luck!