I disagree. I've used limewire for about 3 years and haven't gotten a virus, but the first thing I tried to get from a bittorrent tracker thing (I think it was TPB, maybe not) had a few viruses on it, including a trojan that attempted to open a backdoor on my computer. Well if you're not stupid and don't go around downloading torrents with bad comments, or try to download a movie that's 22mb or something, you'll be fine. It's exactly like what you said, if you know what to look for, you can weed out bad choices easily (and bittorrent is a much, much, *much* more powerful protocol than gnutella)