Once a match is found, the file is queued for download.
Using cron or the Windows Scheduler, you can program Nucleus to fire in the middle of the night downloading while you sleep :-)
In Ray’s example, he is using it to grab TV shows, but I suppose you can use it to grab any .torrent file — assuming of course that your tracker of choice has an RSS feed.
I’ve tested it from the command line under Debian and it worked well. Although I’m still having some problems getting it to run via crontab, but that’s on my end.
Ray is actively adding to Nucleus and I’m sure he’d appreciate your help.