The Ad Busters
I had to quit The Ad Busters (http://www.theadbusters.com/), they gave me a four-digit user name instead of letting me pick my own, and I kept forgetting it. Finally, I wrote Support for the site, and they sent the number and it didn't work. I've got over a hundred safelists listed, and that's just scratching the surface. Goodbye, adbusters.