This is a feature not everyone stumbles upon, but if you follow the 2nd link called “past” on the page, the one under the headline, it performs a search for you

This is a feature not everyone stumbles upon, but if you follow the 2nd link called “past” on the page, the one under the headline, it performs a search for you for previous discussions. Dang has his own tool, but it’s handy when he hasn’t done the search yet. (The 1st such link, at the very top, emulates previous days’ front page.)