I agree you should listen at least twice a day. One of the most successful people here listened three times a day! But from experience, it's a long file and you run the risk of getting too bored. It's crucial though that you listen at least once a day and fallow Sarnoga's instructions, this file produces physical and hormonal changes and from what I've seen intermittent listening doesn't work, while long term listening almost always does.
I know from PM that there are some guys who are on the edge, wanting to do it but as scared as I was, so maybe some will join the challenge for a larger group. Also, if you're like I was, the pix of guys shrinking will make you so horny that you won't be able to resist listening, so by doing it and posting your progress you'll be sucking other guys in!
If you're really scared, listen to the non-curse version for a week, knowing that you can still stop if you want to. The file will make you want and like the results more and more. I did something like that when I listened, and after a week I was loving it so I kept going. OK, so I was a bit brainwashed at that point, but that's half the fun.

Another thing you can do is that if you're an email slave, you can ask to be forced to listen. I did that when I couldn't work up the guts to switch to the curse version, I told a friend here and he made me.