Loosing the category in URL

Problem: A previous choosen category in the URL is lost when opening a post.

Description: In a case a visitor choose a category it is quite certain that he only want to see posts of this particular category. Therefore one must decide which how the navigation must be presented to the visitor.

Pretending you’re a visitor: Choose a certain category of posts you want to see. Please notice that the category is shown somewhere in the URL, depeding which permaling structure you’ve choosen. Next choose one of the posts that will be displayed for this category. You notice that the category you’ve choosen before is gone in the URL?

Q: Why you need the category in the URL?
A: In a case a visitor choose a category it is quite certain that he only want to see posts of this particular category. Therefore one must decide which navigation must be presented to the visitor: a global one or a one that stays within the choosen category.

HOW????

Cheers,
Alexander @ http://www.mouseclick.com