I've searched for an answer on this subject and point me in the direction if anyone knows for certain. I've tagged this moderators and well the question is about flagging and hopefully john or pete or any other moderator will be able to answer.
I've come across a lot of unanswered questions since well there is many as your aware and it would be nice if the site had as few unanswered questions as possible, but a lot of these questions are unanswered for a reason and a large amount of these questions are because the questioner has failed to provide enough details for people to even answer.
How long do you give questions despite people asking to provide more details before they should be flagged?