* Defining categories and subcategories in unlimited depth
* Image upload for the categories and the advertisements
* Definig variable fields for the advertisements per categories
* Customizable email notifications

Detailed features
Administration:

* Defining categories and subcategories in unlimited depth,
* 'Locking' a category from submitting any more ads,
* Definig variable fields for the advertisements per categories:
o Support of field types such as text, textarea, boolean, checkbox and selection list
o Specifying the default values of the fields
o Possibility to activate, or deactivate a field
o Deciding weather a fileld is mandatory, searchable, object of bad word replacement, can be kept private by the owner, and controlling its appearance in the ad lists
o Creating sections of the variable fields by specifying custom separator lines
* Accept and reject ads, or let them appear immediately - handling the list of accepted and pending ads.
* The admin gets email notifications about the new ads, the user get emails about the acceptance or rejection of their ads
* Notification management: all the emails sent by the system are customizable - the admin can change their text, or disable them completely
* Bad word replacement
* The admin has full control over a lot of system property such as the ad expiration time, size and dimension limit on the uploaded images, thumbnail dimensions, and many more.
* Control the the apperance by specifying custom header and footer templates, or changing the stylesheet.
* Viewing and handling the list of users

User functions:

* Submit, modify and delete ads,
* Upload images - thumbnails will be generated automatically,
* Browsing the list of recent, or most popular ads
* Browsing 'my ads'
* Modifying the user profile
* Extend expiration date
* Search in the classifieds database: simple search and category specific advanced search
* Reply to an ad, or sending it to a friend