The upvote guidance on questions is:
This question shows research effort; it is useful and clear
It does not suggest that an upvote should, in any way, be related to whether the question receives any answers i.e. it is purely about how the question presents itself.
I am one of the most frequent upvoters on this site, and I am about 1.25 times as likely ...
About the mechanics
It takes five community votes and/or one moderator vote to close a question. Don't worry if you see a stray close vote or two--sometimes these are made in haste or are just plain mistaken.
"Second, the much-requested “reopen queue” has been introduced. The sister component to the close queue, this queue contains questions that have votes ...
I very much agree with user Pekka's answer in the thread you linked.
When I see a bad question by a new user, I try to ask myself whether it might be a language barrier problem, lack of research ("rtfm"), or "do my homework for me".
I try to help improve questions where language seems to be the problem. I don't think the other two kinds of question deserve ...
With the special case of new users (perhaps with English not as their first language) addressed in a separate Q&A at Should there be a grace period before downvoting questions from a new user? my answer applies to any remaining cases of experienced and English speaking users, and when it is appropriate to downvote their questions.
The tooltip for ...
It seems to be related to the same event as is being asked about at Meta SE in
Massive user removal in one night?
As @Animuson has answered there:
One or more users deleted their profiles, and there's really not
anything further we can discuss about the topic for privacy reasons.
I think the decision on whether to retain reputation on (self-)deletion ...
At the moment you have 3 upvotes and 1 downvote (net 2 upvotes).
I assume that when you checked, you received 8 rep because at that moment you had 1 upvote and 1 downvote. Sometimes it takes a while for the system to update :)
Voting to close your own questions is always fine. That leaves it up to the community to judge their value.
However, my advice would be to only delete questions when they really have no value to anyone, and that no one should delete questions when they are new to the site, because that can feed into the algorithms that determine question bans and rate ...
It's not about update frequency. It's about vote-totals:
While 28 people have voted here this month, no one's voted more than 10 times. The votingest voter has cast only 8 votes. So, no one meets the 10-vote threshold for display on the page.
This question has of course been discussed before on meta.stackoverflow.com: Accepting answer without upvoting?
I particularly like this answer:
Accepting w/out upvoting makes sense in one situation IMHO.
If you end up using an answer that you don't like, but works.
For example, if you put some constraint on your question that says "I need to do X, ...
I am against historical locking questions in such situations, because it bothers me not being able to edit a post I authored, even if that post had the community wiki status (then, I would had coauthored). Other arguments can be found in @KHibma's answer in Using wiki answer lock on particular highly upvoted community wiki question that would be closed if ...
I feel that the main situation that requires downvoting AN ANSWER is when it is mistaken, incorrect, dangerous or proposes a gunblazing approach without informing potential users of pitfalls.
PolyGeo's answer is very precise, covers the rest of the ground very well and i totally agree with it.
This comment from @animuson from here answers my question quite well:
allowing them to vote again would allow them to quickly retract their vote then vote to close again to bump it back into the Close Votes queue after receiving enough Leave Open votes to kick it out. It's just as prone to abuse. Once you've cast your vote, you've cast your vote. That ...
The ability to retract re-open votes is the subject of a feature request at Meta Stack Exchange - see Ability to retract reopen/delete votes.
It has been open for more than 5 years and appears not to have been implemented nor declined by the Stack Exchange developers.
Any way to combat abuse of downvotes?
Yes, please take a careful read on What is serial voting and how does it affect me?
Is there any mechanism on Stack Exchange to report abuse of downvotes by other users?
Yes, hit the 'Contact' button in the bottom of the page and choose 'Other' in the dropdown. Explain the situation in details.
However, please take ...
I think the terminology of "thread", which is suitable for discussion forums, is out of place at Stack Exchange sites and, in the case you cite, should be replaced by "post" (i.e. question or answer), or by "Q&A" if you are talking about them together.
That aside, I just searched Meta Stack Exchange and cannot locate an answer to your question.
I think ...
Votes are revoked when a user deletes their account
Help Center > My Account
How do I delete my account?
User deletion is irreversible! By sending this request, your votes
will be revoked, and all of your content will be made anonymous.
There was a recent modification in the system about how dropping of votes works when an user is deleted or decides to leave the Stack Exchange community (see Don't throw away all votes when a user is deleted).
Now, there is a threshold based on the number of votes cast, as was suggested in this question. The threshold is unknown, but it has been said ...
A comment was made today on a question that I had voted to close, and the reason I voted that way was nothing about duplicates, so I'm providing an answer separate from the excellent one by @whuber to explain why I voted to close sooner rather than later.
This question was an example where I felt I had better than average expertise, yet I could not get a ...
To me that level of viewing and voting does not arouse any suspicion of a voting irregularity.
Most likely it was either shared on Twitter/Facebook/etc, appeared in a GIS SE newsletter, or reached the Hot Network Questions.
If you are suspicious you can always flag for a moderator to investigate, but I think the evidence presented would need to be much ...