[support] I can't believe you can't add content from the command line...

[Bèr Kessels]

what you really seem to want is not some on-server script but an XMLRPC script 
that uses blogapi (.module)

I managed to post content to a sandbox Drupal with some hacked up Ruby script, 
using the very simple-to-use XMLRPC libraries: 
http://www.ruby-doc.org/stdlib/libdoc/xmlrpc/rdoc/index.html
 
Talking to your Drupal site is very simple with that library. and I am certain 
there is something like this for PHP (or any other language you like).

Bèr