Putting Users into Groups/Categories Upon Registration
 

Is it possible with the new CMS to allow users to assign themselves to a a group/category (I'm not sure what it would be called in the vbulletin lingo)?

Would it then be possible to show all the people from certain groups, and more importantly, show all their blog posts together.

For example, say when the user signed up they chose their country: U.S., England, Japan, etc.

Then, would it be possible to create a list of links that would go to all the blogs from the U.S. people and another page of all the blogs from the England group, and then all from the Japan group, etc?

Thanks.