Sirclip:
USENET is basically a very old system for distributing messages on the internet that has had a resurgence in recent years as a very good file distribution mechanism which is anonymous and fast. It requires you to pay a commercial service provider usually and it takes a little while to get it working, but once you have, it is ridiculously easy.
hxxp://www.slyck.com/ng.php is a good guide to USENET for files.
As for what was said above though - I can understand people not wanting to get into NZBs - for those that have done it, though, it's well worth the effort!