New poll: What is the solution for IPv6 usage?

After 280 votes on the last poll i have decided to put a new poll online. The results of the previous poll will be online asap.
The new poll is based on the question what would benefit the usage of IPv6 the most. If you want to comment on your vote you can do so in the comments of this post!
So don’t wait any longer and vote!
Multicast audio and video streams!
It’s never been utilized fully in the IPv4 Internet. Under and IPv6 Internet, ISP’s could actually save bandwidth by use of this facility, not to mention the savings to the source providers. How many times have I read about a Net radio station that can’t afford to offer audio streams to all the users that would listen; Multicast would solve that problem.