The TV landscape continues to shift and change, as evidenced by major changes announced by HBO and CBS this week. For those who love HBO but hate paying for all the other cable channels they never watch, there will soon be another option. HBO will be offering an online subscription service that will give access to HBO content without requiring a cable package. But the exact details--how much content will be available and how much it will cost--are yet to be revealed. And not to be left behind, traditional broadcast network CBS will also be offering a subscription web service, one that is already available now in several markets. These changes are not only a response to cord cutters--people who get rid of cable all together, but also to calls for cable offerings to be "unbundled" or be made available on an a la carte basis.