Outside of the money you pay for Internet access, it still costs nothing to watch YouTube. Technically. But if you have a problem with compulsive shopping, you may want to cut up your credit cards, because Google has figured out a new way to monetize its video-sharing site, and it’s actually pretty simple — if not outright obvious. Say you’re watching a music video on YouTube — you can now click on a link near the viewer window and be taken directly to iTunes to buy that song.
