I admit defeat and come to you for help.
Someone more experienced than me in configuring web servers please make
a package for torrentwatch-x or write a tutorial on how to config it.
It seems to be much more lightweight than flexget, so long as someone
can make it work...
Here is the site:
http://code.google.com/p/torrentwatch-x/
Here is a working demo:
http://torrentwatch.wiebel.nl/