One of the many things (replacing the vocoder) that came into prominence over the past 10-20 years that's made music a joke. Only Roger Troutman and Zapp got away with it. I disliked it when Teddy Riley would do it in Guy/Blackstreet and I dislike when T-Pain/Kanye do it today. T-Pain has no talent, so I can understand why he'd do it. He can't sing, he can't rap and ain't good looking enough to rely on image - something had to be his niche. But people like Kanye doing it kills me. Anyone who has just a decent amount of vocal skills shouldn't be trying to get cute with that autotune bullshit.