The best open source mailing list archive is unquestionably https://marc.info . yet when you search things that are open source relevant, you get https://nabble.com which goes as far as to fake being a forum and fills content from mailing lists, is nearly useless feature wise, and is crammed with all sorts of nasty obnoxious advertising.
marc.info doesn't even crack page 10 with typical queries, because they don't play the SEO optimization game, and doesn't run ads.
This is a great example of Google becoming totally useless.
The last time I remember this being mentioned on HN, a few days later marc.info was at the top of search results for mailing list type posts, but it seems whatever manual tweak they applied has since been invalidated by the Googletron...
I don't know how many times I've had to add -nodejs to things I'm trying to search to eliminate irrelevant garbage from some of my searches.
Searches you do now on basically any subject you are not an expert in already give you the same subject matter level of expertise you can expect from a 5 minute segment on the nightly news, whereas before you could expect at least the quality of a 30 minute show hosted by James Burke.