If you want to display user information like (website, address, logo ) on ad page then you can switch off users and make all new registrations dealers. Dealers have website, logo and info area which can be displayed on every ad page that dealer posts.
All those fields are not mandatory so dealer may ignore those fields.
To do this go to “Settings” -> “Account” page on Admin panel and disable “User account”, enable “Dealer account” and check all check-boxes under dealer account .
You may also switch existing user account to dealer account. If you have too many user account to switch then please let us know.