I'm surprised no one mentioned Xolox yet. It's been the easiest to use so far, and no spyware either. Xolox was ticking people on the Gnutella network off because of the massive amount of searching/pinging it would do for a single query.
Oh well, I've kind of backed off of downloading stuff. I have a few reasons, the top one being that I have dial-up connection speed. That makes d/l-ing an overnight affair for MOST of the stuff I want. Fortunately, high-speed will be available in my neck o' the woods by mid June, or so they say.
Anyhoo, it's no biggie for me as of right now. I've diverted my attention to DVDs and conversion processes for them. So far, I can squeeze a full length (~4.7GB) movie down to ~335MB, with decent video quality and stereo sound.
Still have to install that DivX 5 codec, though....