Some users at HN raise the quality of discussions. Some of the more frequent contributers give their insights into many of the daily posts. I love their comments and learned a lot .. However, i often i feel guilty , if i spend time on hn (that i should be working ..). And then feel guilty if i don't spend time to contribute to community, from which i gained so much. How much time do you spend in HN daily and how do you manage it ?