I think a relevant criterion should be how likely people will still be to want to read and comment the post in five years. (ISTM it’s more likely for a new comment to an old thread to be missed by everybody in Discussion than in Main, as the former’s Recent Comments page is more diluted.)
I think a relevant criterion should be how likely people will still be to want to read and comment the post in five years. (ISTM it’s more likely for a new comment to an old thread to be missed by everybody in Discussion than in Main, as the former’s Recent Comments page is more diluted.)