Here on Biblical Hermeneutics, we love flags. We get excited when we see your flags. We want more of them. This is just an itty bitty tiny gripe pertaining to flags on answers, primarily those raised by >4k users (who, as it happens, constitute most of our flaggers).
What do you mean when you flag something as Not An Answer or Very Low Quality? My understanding is that you mean, "Please delete this for me." If you didn't like it but didn't think it warranted deletion, you would have just downvoted, or commented, or ignored it, or whatever it is that you do when you see things you don't like. When you file your, "Please Delete This For Me" request, I would like to suggest that you also strongly consider:
Downvoting (>125 rep.). This is done surprisingly rarely. I understand — I forget to downvote all the time before taking some mod action. But it's really important for several reasons:
a. It counts toward the automated answer-bans.
b. If the answer isn't deleted, it contributes to our crowd-sourced ranking mechanism which is what (well, a part of what) makes SE great.
c. If the answer is deleted, it testifies to the fact that one rogue mod was not the only person who thought this was crummy content.
Just in case you're worried about "wasting" your 1 point rep loss on an answer that will be deleted, rest assured: you will be refunded. Never seen a +1 green box pop up at the top of your screen? You're not downvoting enough.
Voting to delete1 (>4000 rep.). Please, pretty please. If you have the privilege, use it! Mods everywhere agree! Some claim that they decline every flag from a high-rep user that comes without a VTD! You may wonder why we care. My delete button works equally well whether or not there's a vote there already.
a. We get lonely. It's nice to have someone else's name nearby on the "Deleted by..." stamp.
b. It's the principle of the thing: community moderation, etc. "Delete this for me" is not how highly privileged members of the community should operate.
c. It is actually possible for the community to delete things without mod intervention (3 votes). I don't mind being involved, but that's there.
d. Occasionally (very occasionally) we disagree amongst ourselves about whether something should be deleted. As it stands, saying "well, it's sat there for 2 months and there are zero VTDs" means nothing. It should.
Commenting. This is optional. It takes time. I don't mind doing it if you don't feel like it.
By all means, if you don't think something warrants deletion, or aren't sure, or think it should be migrated, or just want a mod to look at it, flag as "other » explanation" and don't VTD. But when you flag as Not An Answer or Very Low Quality, that is intended as a suggestion to delete....right?
1. Users with >4k rep may vote to delete any answer with a score of -1 or less. Your own vote counts. Unless an answer starts with a positive score, you should be able to VTD.