I agree with Herman.
In my case, I put that live pa up on the internet for promotional purposes. We just had Claude Young here this weekend what he basically said more or less in reply to recording his set was, "Yeah, shit man...anything that helps you guys further your scene. This stuff needs to get out there. How can the masses understand us if we don't show them what we're doing?"
Even though he wrecked a few mixes (despite rockin' out an amazing set and giving this city one of hte most amazing parties in a long time), he still didn't care if we wanted to put it out. He is really cool about mix sets and what not.
That being said, I think he's right in a way. Another downside is sometimes you play a party where either you're playing like total shit or the setup is horrible and the recording catches every trainwreck you make in your set. Next thing you know its all over the servers and soulseek and then people bitch about your shitty skills here on boa. :) :)
Like most debates in this techno scene, it's a double edged sword. Personally, I think most DJ sets and/or live pa's are really boring because it doesn't have the same feel as a club, but some are real cool. I've been to parties where the set was amazing and then you come home and download it and you think to yourself, "Man, either it was really about the moment, or I was really wasted, or both."