> How about PostNuke?  I like the looks of that.

PostNuke == devil.  Postnuke is a fork of PHPNuke.  Both of them suffer from
gaping security holes almost weekly.  There is no way I would suggest anyone
to run it.  Search the bugtraq archives and you'll see what I mean.

Plus, it's slow.  Each page makes an excessive amount of database calls.  I
tested it a long time ago, and it took nearly 1 second to generate a page on
a PII 450.  Geeklog takes 0.22 seconds on average.