According to site analytics, 2015-05-03 was the day with the record number of answers posted, with 1022: it's far ahead of the second place. But at present, only 769 survive. I'm curious about the other 253: was this a spam wave or low quality wave? (Adding deleted:1 to the search linked above would probably tell the story)

@ArthurFischer I'm still annoyed "problem" is in the black list, even though I understand why it's there.

@J.M. It's in the greylist, not blacklist: generates a pop-up message that one doesn't even have to click to dismiss. And even that happens only when the title is pretty short, with at most 30 characters on either side of "problem".

@NormalHuman Again, I understand the need to be on the list ("gray" being less annoying than "black"); still, by that criterion you bring up, "Is this a three-body problem solution?" will trigger the popup. Why can't we have nice things...

"Is this a three-body problem solution?" is not such a great title... Also, it's not clear what exactly do you propose to change.

@NormalHuman Unfortunately, I've no solution/changes in mind; I just thought it's sad that that word has to be on the list.

@NormalHuman From what I see, it is 2015-05-04 where we had 1022 answers. (And is:answer created:2015-05-04 deleted:all backs this up.)

@J.M. As @NormalHuman says, "problem" and the like just pop up warnings in short titles. While there are many named "Problems" in mathematics (the three-body, and travelling salesman), for the most part questions with this word in their titles are not about such concepts, but are more likely of the sort "Probability problem with letters" or "Vector integration problem" or "Challenge problem #1".

@ArthurFischer Yes, that's why I said I understand why it's on the list. I'm just sad that it's there because most users can't be arsed to write usable titles.

@J.M. I do not quite get the rational for being specifically sad about "problem" it is not as if the other words are only useless.

@quid, taking from the list (anyone|difficult|doubt|easy|hard|help|interesting|please|problem|query|questio‌​n|someone|stuck|very), "problem" is really the only useful word there; the others I can live without in titles.

@NormalHuman I'm sure I don't have to inform you, but just in case, I've reported these date discrepancies as a bug on MSE.

@J.M. Query is even a technical term, and there is "NP hard."

I am relatively new, and I have been doing a lot of moderation in the site. However, I see "a lot" of my flags are declined (by that, I mean 17/462). For some of them I understand, as my views are possibly stricter than the ones of many others on the site, but in some cases I am a bit confused. I would like some clarifications in order to do things right in the future.

For instance, I flagged this question, as it was missing context and other details, which OP, following my comment, added. But my flag was when the post did not have such details, so why was it declined?

Also, I flagged this question as off-topic and it has actually been closed as off-topic, but my flag was declined.

Also, several "unclear what you're asking" flags have been declined as the question was clarified by a successive edit (e.g. here).

Thing I gather from this: never flag something as "unclear what you are asking" since the majority of those will be declined. I assume this is not the message that I should get, so... what am I supposed to do? Thanks in advance for reading.

(I provided a few examples of different patterns, but the mentioned flags are not the only instances of such patterns among my declined or disputed flags. Also I don't know how decline or dispute works exactly, but I doubt many flags were worth declining, while many of them were probably worth disputing)

@SilviaGhinassi 17/462 is not a lot. Let's be clear: the "close" flags are not handled by moderators, they are entirely the responsibility of 3K+ users participating in the Close Review Queue. Your flag is marked helpful if either (1) someone votes to close for the reason you chose, or (2) the question gets closed, for any reason. It is marked declined if Leave Open votes win in the review (three such votes are needed for that).

The decision of Review queue depends a lot on who is reviewing at the particular time. Some users blast through the queue casting mostly Close votes, others do the same with Leave Open votes. Sometimes, your flag is simply unlucky to run into opposition, apart from its merits.

The Close Queue has been getting pretty large by the site's historic standards, so the workload on reviewers may be contributing to mistakes as well.

Also, there isn't quite enough transparency in the process: see the feature request Community-declined close vote flags should point to the review that declined them

A friend of mine has ~700 posts flagged with 9 declined (compared to 15 of mine), and I am fairly sure we flag the same kind of questions. Hence my definition of "a lot". They have been an user for much longer than me, so your explanation about queues getting large would justify such a discrepancy.

Also, I can see that the Close votes review queue is always big, I look forward to being able to access it and help.

This falls under case (2) of your reply, so I am still a bit confused. If people first vote to leave open, then someone else flags the question and then it gets closed, is my old flag still declined?

@SilviaGhinassi This was an edge case. The reviewers were split and the question got 3 Leave Open after the 4th close vote. This ended the review with Leave Open decision, hence the declined flag. The 5th vote was cast on the question directly, not from review.

By the way, this is the query that helps locating reviews for a given post. (The data is loaded on weekends, so it may not be available for more recent reviews).

As you can see, I have nothing left to do... I see. I'll save the query among my favorites and probably forget about it. Thanks for the helpful answers.