I've used it a couple of times with good success. I'm more a "fits and starts" sort of writer so I can't use it often. It stresses me out! I should buckle down and write more for longer instead of taking all the little breaks to check the "important things" on the internet. I'm not even opening up Facebook this month (and it hasn't stressed me out in the least) so that is going to save me a stupid amount of time that I've been wasting for the last year. Ugh!

Do you use it often (omg, I just wrote awesome instead of often and then couldn't remember how to write often and it's only like 9:30 here so I shouldn't be this punchy!) when you're writing?

Sometimes I need it worse than others - usually I turn to it when I'm having writers-blocky-issues because i forces me to work past them, even if it ends up being crap it'll shake something loose.

I get some of my best ideas when I write fast. Yes, granted, they have to be rewritten but it's exactly what you said. A good way to shake things loose!