We have a lot of categories (10+) it is difficult to scrool 10 pages down when everything looks the same.
So we created links in header and use the Cat=10,12,13,14 functionality. But this is not enough.
In FireFox browser there is an interesting feature called Tab. Also, tabs are used in threads in threads Control panel.
It would be nice to have a hack, that would place categories is TABs: vertically or horizontally, maybe using stylesheet to make TABs colorful.