RE:
There are a number of widgets available on the widget pages, like ad sponsors, archive, ad searchbox etc. which you can drag to the sidebars.
I am referring to 'adcategories' and 'categories'. I wonder what the difference between those two are.
And is it possible to create a directory structure with them just like the directory searchbox has.?
Apparently the searchbox can hold more category levels than the menu category on top of page can have which can only show one subcategory. If I have a sub-sub category it also shows under the main category.
And another question is if they can be dragged to the main menu bar on top of page or only to the various sidebars?