http://wiki.github.com/radiant/radiant/using-radiant-as-a-blog
http://wiki.github.com/radiant/radiant/radius-tag-reference
I assumed that the Radiant guys had already thought this through, so why try
to reinvent the wheel. Plus we could use their documentation without much
modification.
If it's not doing this already, I do think children-each should default to
the current page. I think that's how Radiant does it, anyway!
I hope this helps!
Clarke