** switched on for a short while and then powered down: mostly stuff merged to other filters; or for which the community decides filter is not an appropriate solution (308); or decides to not implement the thing (that way); 290 (disabled, since relevant pages were protected)
** or switched off after a short while because there were no hits: 304
** or switched off after a longer while, because it was not tripped frequently, in order to save conditions from the condition limit
** switched on and still on: 11 (verify), 79 (with brief periods of being disabled for couple of minutes/hours, probably in order to update the pattern)
** switched off bc merged to another filter 440 was merged in 345
** switched on and still on: 11 (verify), 79 (with brief periods of being disabled for couple of minutes/hours, probably in order to update the pattern), 164, 642 (if we ignore the 2min period it was disabled on 13.4.2018), 733 (2.11.2015-present)
** switched on for a while, deactivated for a while, activated again?: 61, 98 (was deactivated briefly since an editor found the "warn" action unfounded; re-enabled to tag), 148 ("20160213 - disabled - possible technical issue - see edit filter noticeboard - xaosflux")
** switched on and stayed on, with the exception of brief periods of time when the filter was deactivated (and the activated again), probably in order to update the conditions: 79, 135 (there were couple of others in Shirik's list, go back and look);
** irregular?
...
...
@@ -39,7 +40,7 @@
** an older filter is split?
** several older filters are merged?
** or functionality of an older filter is took and extended in a newer one (479->631); (82->278)
** new condition(s) are tested and then merged into existing filter : stuff from 292 was merged to 135 (https://en.wikipedia.org/wiki/Special:AbuseFilter/history/135/diff/prev/4408 ; following the comments from https://en.wikipedia.org/wiki/Special:AbuseFilter/292 it was not conceived as a test filter though, but it was rather merged in 135 post-factum to save conditions)
** new condition(s) are tested and then merged into existing filter : stuff from 292 was merged to 135 (https://en.wikipedia.org/wiki/Special:AbuseFilter/history/135/diff/prev/4408 ; following the comments from https://en.wikipedia.org/wiki/Special:AbuseFilter/292 it was not conceived as a test filter though, but it was rather merged in 135 post-factum to save conditions); 440 was merged into 345
* How stable is the filter maker community?
** how many new users have become part of it over time?