Smokedetector: Inavlidated feedback on MS does not remove the user from blacklist

[fortunate-man]

Apparently, if someone blacklists a user using tpu-, and the feedback gets invalidated, the user is not removed from the blacklist.

This has caused false positives. Example: http://chat.stackoverflow.com/transcript/message/34103819#34103819

IMO, the user should be removed from the blacklist in case the feedback is invalidated.

[ArtOfCode-]

Ideally? Yeah, it should. In practice? This is like someone using k in chat by accident then switching feedback... which also doesn't remove the blacklist, which is why we have !!/rmblu.

[fortunate-man]

@ArtOfCode- so could it be implemented? It seems like a good addition and will reduce some false positives.

[Undo1]

Over the last 3 months, 77 posts have had invalidated tp feedback. There were 10 other posts from those users made before or after the post with invalidated feedback. 7 of those 10 were true positives, 1 NAA, and 2 false positives.

So I don't think there are sufficient numbers here to justify it it.

Caveats (all working in favor of this proposal):

• Post timing isn't checked; the other posts could have been made after the one with invalidated feedback.
• I'm not checking the reason a post was caught. A better test (which would only shrink the numbers here) would be to look at posts caught by _only_ the blacklisted user reason.