It seems like HN's anti procrastination feature isn't well known. I now am only entitled 2 twenty minute sessions a day. The first one starts when I first get to work, the second one at about lunch time. It works great, highly recommended for those who are lacking a bit in the will power.
It also makes getting sucked into debates impossible.
No I do have noprocrast turned on. But even with checking HN just four times a day, the blow to my productivity is many times that, considering how many articles I open every time I visit.
Then again - I suppose I should start using noprocrast like you do.
It also makes getting sucked into debates impossible.