By now you've heard that Apple has come out with this little device called the iPad, and one of its magical features is to serve double-duty as an eBook reader. Surely this will mark the end of the dedicated eReader market, right?

Back the boat, Gilligan, because Amazon has something to say on the matter. In a new ad promoting Amazon's refreshed Kindle, the e-tailer points out the benefits of an E-ink display over that of an LCD screen when trying to read in sunlit areas.

The ad shows an iPad user trying, in vain, to read content on his iPad while chillaxing by the pool. He then asks a Kindle user laying a few feet away how she's able to read her device sitting out in sun, to which she simply replies, "It's a Kindle. A hundred and thirty nine dollars. I actually paid more for these sunglasses."

There are a few things to take away from this ad. First, she paid too much for her sunglasses. Second, unlike the many Mac vs PC commercials we were force fed the past couple of years, Amazon makes a valid point here. And third, speaking of all those commercials, Apples comeuppance just keeps coming.