I bought shortys for vantage solely because of this :
3. Make your site unique and control what Google indexes.
ClassiPress by default adds in every category page the ‘ad-category’ link so eventually your categories have this structure:
With Shortys you can get rid of it and control your links
You can change it to anything you like and do that for all the pages you create to organize and promote your ads!
How can i make it do this sitewide? I see no options