The way I see it, it's just as easy to tell people how much you hate them and their posts.....just start a thread, like this one. There is no need for the rep system when you can do it in a thread and everyone can see what you posted.
When we had the rep system, I never negged people except when they negged me, I negged them back. And when I first came here, I was told I was stupid to neg back those that had more rep than me, but I figured it was more stupid to just let those bullies continue to neg me when I could neg them back. They kept bragging about how I should do the math....in other words, they were taking so many more points from me than I could take away from them....but really, if they were to do the math themselves, taking 1 or 2 points away from them is better than taking 0 points. So, it wasn't so much about the nice pms that you could send with a rep, it was more about the points, to those bullies, anyway. And I never got a nice note with a neg.....it was always an insult and name-calling. I can still send a pm with this system if I want to, or I can just reply and tell them how much I appreciate their post. Not a biggie, if you ask me.
Oh, and about those that negged me.....well, as soon as I passed them up in points, they quit their negging.... coincidence? Hardly.
That's why some folks would rep new people and others that would be negged mercilessly by Warrior and others for simply having a different opinion. Just to help offset that so that they wouldn't be run off the site. Yes, it did happen. So some would help them build their rep because these bullies would always stop if you got close to them in rep and if you surpassed them, they'd start kissing your ass.