querying modules dependency tree on CPAN

From: Xavier Noria (fxn_at_hashref.com)
Date: 11/19/04 

Date: 19 Nov 2004 00:54:47 -0800

In order to prepare a talk about source filters for Barcelona.pm I
wonder whether I could query CPAN somehow to know which modules use
Filter::Simple.

Do you know whether that's possible?

-- fxn