There are other Firefish instances, though, in case one wants to use Firefish and also federate with mastodon.art.

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There’s Antennas, although they may not be exactly what you’re looking for since they’re in a separate location from your main feed.

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I’ve read several people complain over the last year or so that Google’s results have been getting worse and they add site:reddit.com or similar to improve the results. I use a search engine called Kagi that includes a “lens” to see forum results only which is neat. I wonder if this is Google’s attempted answer.

Google has a bad reputation for killing its own products, to be sure. This is a part of Search, though, so I think less likely to die. If the results are terrible, and users don’t click on them, I bet you are right!