Two things that (i THINK) are easy to implement.
1. In the Duplicated checker, FLAG one ad as duplicate ONLY if the regionals are the same. Because sometimes we want an ad to be posted in different areas, cities etc. Right now only the title and description is checked.
2. Do not check for spam keywords if the ADMIN is editing/saving an ad. Because then you need to go back a few steps (after flagged for spam, you are in the Home Page).
Just my 2cents