1. Hack related since you would need to recode how the variable is defined in pp-inc.php
2. Thats Michael's site and to make a category avatar as admin when viewing an ad in a category you can hit MAKE INDEX THUMB to be the cat avatar.
3. Classifieds dont give a time countdown till they expire only auctions so I need to see a link to what you mean
4. You may do what best suits you. Our feedback system is included with our system and for use without our product for users to leave feedback on sellers.
5. Usergroup permission is a global permission. Then you can fine tune things with cat permissions. Example being you could set everyone to upload in your cats but if you have uploads off no one is gonna be able to upload. So it works the otherway with cat perms limiting things or rather called fine tuning