That new $79 Kindle that Amazon just announced is ad supported, as befits a screaming deal. But if you just don't want to see the dang ads any more you can now pay an extra $30 once you have the machine and get rid of them.
All you need to do is head to the Manage Your Kindle page and choose to unsubscribe from the ads. You will have to pay the $30 discount to remove them, but at least you can then use your device without ads bothering you. I'm actually surprised that all Amazon wants is the difference you would have paid for the normal Kindle at the time of purchase. I bet there are some that would have gladly paid more to shed the ads.
One assumes that this might be in response to people getting these things and wanting to dump the ads, perhaps not realizing what they were buying.