Yeah, I'd like to know what the Chances of Survival rating is based on. I think that anything with any commercial interest is destined to disappear, just because I can't get through all the lawsuits that surely are upcoming.
As for WinMX, I don't use the opennap component at all, and I hardly ever have any trouble getting the music I'm looking for. It most definitely does have its fans.
I don't know about Soulseek, personally. Everyone tells me it's so great, but I have yet to download a single byte after uploading well over 2 gigs. <shrug> I'm sure it's a fine client for whatever people who use it use it for.