Hi
Have a read up on
INT column types over at MySQL. It will explain why what you are trying will not work with the current vB default column type for post count *UNSIGNED RANGE* <= does not allow for 'negative values'. You can change it to a *SIGNED RANGE*, but this will use more space, and also cause some table joins to use temporary tables when they would not be used for unsigned ranges! You can just do a template edit an add '-' before the post count and also use a <if condition=...> so it works only on certain users or groups of users!
Sonia