Little questions about your Advertisement board :
- no extra fields ?
- no nested categories?
- no multi categories?...
Listings seem very "basic" beside your realestate one...
Please check Advertisement board software
- this is very simply software for create Ads site, we special created it so simply as possible.
If you need complicate ads site:
- with any layouts,
- with any fields,
- with nested categories
- with multi categories
- with possibility show users and they content
- with manage of access to your content
- with possibility show payments ads to some special places...
and many many other ....
we have Joomla CCK - Website Builder
. There you may build any site type with any content types and and with help our Website Builder you may Create Advertisement board so complicate as you need