Hi,
I've created a little widget that you can add on any 'holder' page that pings Technorati, Weblogs and Pingomatic when a child page is published.
If anyone wants to look at it, check it out and let me know if you find any problems.
grtz
edit: uploading archives here doesn't seem to work?
Here's the link: http://www.dio5.com/assets/Zips/widgetsping-0.1.tar.gz