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Maybe what the PLC question points to is that it's not an overall B-index, it's a B-index scoped to specific threats

• B(PLC, 99.9) = 1 and that's likely to remain the case for the next 6+ months

• B(Relay, 99) = 1 but that's (maybe) in the process of changing

On blocklists ... it's a can of worms. On The Bad Space, I have thoughts at https://privacy.thenexus.today/the-bad-space/ ... as far as I know few if any instances use it as a blocklist, although when I set up an instance I did used their 60% list along with Seirdy's Tier0 as starting points. Seirdy's work is extraordinarily good, the detailed receipts are invaluable, and there's a lot of value complementing the automated aggregation with personal judgment. TBS's sources prioritize safety for marginalized people -- the race aspect gets a lot of focus, obviously but it's often overlooked just how many of the TBS sources are trans- and queer- led.

My guess is that Seirdy's lists, Gardenfence, and Oliphant have the broadest usage, but I don't know how broad it is -- and I don't know how many instances automatically process updates. A complication here is thatthey're all aggregations of the blocklists of various source instances, and there's a lot of overlap on their sources; plus, some of the sources take cues from the others. Which makes sense: if an instance known for good moderation decides to block somebody, it's a good idea for everybody to look at it and make their own decisions, and if there are receipts everybody will make a similar decision. For that matter,no matter the source, a post to FediBlock with receipts will also lead to blocking by multiple instances.

I don't think any of the larger instances directly use any of the blocklists; some consult them as part of curating their blocklists, but don't treat them as ground truth. Seirdy's FediNuke and Gardenfence both had ~140 entries last time I checked (early this year), with substantial but not complete overlap, and all of those are on Seirdy's Tier0 and Oliphant's Tier0 ... but according to CARIAD, there are only ~70 instances that are blocked by 80% of the largest instances. wtf. Seirdy has receipts on the blocklist page, why would anybody not block hose instances? @jaz has links to CARIAD's stats at https://neuromatch.social/@jaz@mastodon.iftas.org/115146871066372145

EDIT clarified CARIAD discussion, thanks to Jaz' correction

@ricci