The article mentions that stars can be seen at all times, but I'd like to add to that
http://www.youtube.com/watch?v=6k7MsmzbctE&feature=PlayList&p=B53A8C65FD463DBB&index=4
When Goofy and Donald arrive in traverse town, Goofy points out that a star is going out and so Donald says they need to hurry. I can't remember where I saw or read this, but I'm pretty sure that from Traverse Town, the stars that are visible are the ones not yet taken by the heartless. Does anyone know what I'm talking about? I don't want to edit the article til I remember where I saw this information.
Also, I've seen some discussion regarding what happens after a world is taken. In this next video (starting around 5:40) it shows Jiminy talking to Donald and Goofy about how his world disappeared. Jiminy says "It was terrible. We were scattered. And as far as I can see, I'm the only one who made it to this castle."
http://www.youtube.com/watch?v=guFVm2DWN3E&feature=PlayList&p=B53A8C65FD463DBB&index=2
I guess there could be multiple interpretations here, but I believe it means that people from the taken worlds don't just go directly and exclusively to Traverse Town.
Anyone agree with me or have any information to that supports or is contrary to what I've presented?