Adding a custom report column

[Gervase Markham]

Christian Reis wrote:
> Here's an interesting question for this breezy Friday: how do I add a
> column to the reports that indicates the /date/ a bug was created? 

I don't understand the question. Every bug (just about) has a unique 
creation date. The reports system is all about aggregating bugs, where 
the cells of the table contain bug counts. How would this work with the 
date thing?

Gerv