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Martin Sleziak
Martin Sleziak
09:01
It is approximately one month since I have posted this:

How fast are deprecated tags getting removed?

May 1 at 8:04, 2 hours 27 minutes total – 22 messages, 2 users, 0 stars

Bookmarked May 1 at 10:40 by Martin Sleziak

14
Q: The existing deprecated tags should be blacklisted

Martin SleziakTL;DR: I suggest to blacklist the deprecated tags that still exist on some questions, in order to prevent them from being added to new questions. There are a few tags which are deprecated and should not be used at all, but still exist on the site.1 Ideally such tags should be completely removed,...

discussion tags blacklisted-tags
During the last month I have not edited away any of the deprecated tags. It seem that the numbers did not change too much anyway.
There are 906 questions with deprecated tags.
abstract-algebra has 329 questions, 193 after removing the most frequent related top-level tags, 113 not having any top-level tag at all.
discrete-mathematics has 176 questions, 86 without co.combinatorics, 47 with no top-level tag.
geometry has 402 questions, 249 with no geometry-related top-level tag, 150 with no top-level tag at all.
As one can see in using queries like this one or this one, there are several users which actively edit posts with deprecated tags and remove/replace them.
Martin Sleziak
Martin Sleziak
09:19
It is also possible to check the edits where the word deprecated is mentioned in the edit summary.
Just a random sample from some stuff that I've seen among relatively recent edits:
Rodrigo de Azevedo: mathoverflow.net/posts/252629/revisions mathoverflow.net/posts/299619/revisions mathoverflow.net/posts/254912/revisions
GH from MO: mathoverflow.net/posts/298203/revisions
j.c.: mathoverflow.net/posts/299260/revisions
Paul Plummer: mathoverflow.net/posts/300449/revisions
YCor: mathoverflow.net/posts/299590/revisions mathoverflow.net/posts/290549/revisions
Willie Wong: mathoverflow.net/posts/297882/revisions
And as I have mentioned a few times, François G. Dorais removed (geometry) tag from a bunch of questions during the last year. I'd guess that getting from 475 questions in August close to 400 is largely thanks to his edits.

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