Danksi, As I said earlier in the thread, the ID will remain with you even when the .mac services get cancelled. You can use the ID to log into groups, buy stuff off iTunes or use it as your Apple ID, so no worries, it's with you permanently now.
I thought about a series of short narratives that are linked by one single object that would appear in each of our own videos. For example, something like a camera, or something as trivial as a matchstick. If we all had one similarity it would bind them all together.