I have had 2 flags denied now, and I always wondered - is this a bad thing?
Two flags is nothing. As a percentage, you're also doing well.
Should I be disheartened if my flag gets denied?
Nope. Just learn from it! Or if you're convinced, try to explain your case (perhaps using the "Other" flag reason).
Should I worry about wasting the time of a ...
This is largely kind of a judgement call as to which flag you use on a given question. There's not a real hard and fast rule, but essentially:
"Off Topic -> Development questions are off topic..." is kind of a catch-all close reason for development questions that we aren't going to handle here. It covers actual programming, publishing questions, setting up ...
We must not become part in bringing down the quality of the flagship product of SE.
A lot of development/programming questions we receive here tends either to debug the app without explaining how to recreate the scenario, or simply throws up logcat's output without even preformatting it, or other things that are at odds with SO guidelines. There are very ...
Some of the wrong ones were from longtime users who ought to know by now what the different flags mean.
I'm (definitely) not a long-time user, but I feel that the current explanations are slightly (just slightly; no more no less) mismatched with the actual descriptions:
The Very Low Quality Flag is officially defined for (reworded for your reading ...
When and how are flagged questions and answers checked in relations to edits?
Depends on what kind of flag – and then how active the "workers" on the corresponding queue are. You wrote you flagged a question off-topic: if that was done via "vote-to-close" it ends up in the "community review queue", waiting for 4 more community members to agree – or disagree....
Migration is very risky, because if you migrate a question to another SE site, and it's closed on that site too, the user will be very annoyed and probably not come back. It also creates more work for moderators and high-rep users on that site.
For this reason, it's recommended not to nominate a question for migration unless you are an active user on the ...
Yes, because the flag originated with a good intention. The mods have the ability to convert the answer to a comment and should do so.
Flag declined, link-only answer subsequently deleted
September 2011 Newsletter - Flags Too Often Marked [declined]
No, the flag should be declined. The answer is salvageable by editing, there is no mod intervention needed. The user should have been simply downvoting the answer and leaving a comment like
We expect answers on Stack Exchange to be self-contained. At the very
least, should that link no longer work this answer becomes useless. At
the very least, ...