Universal Web Entry Form

I cannot tell you how pissed I am when I see a screen for signing up for something on the web. Okay, I can tell you: very pissed. typing in the same crap over and over, not knowing if it's being used for nefarious purposes or what. I want to hit one button and go. I know the autofill thing is supposed to do it, but I find I have to type stuff in again and again. I don't want to do it anymore, dangit!