After reading this recently posted question, I feel I don't quite understand this function. What are the guidelines for flagging a question as "Requires Moderator attention"?
I think the determining factor is it's okay to flag for a moderator's attention if there is an issue that cannot be easily fixed in a timely fashion by the normal processes available to the community (voting, closing, comments, meta discussion, etc).
For example, if someone posted graphic adult content or blatant spam, simply closing it wouldn't really solve the problem. You need a Moderator to "fix" that problem.
- Is it something out of the ordinary that the existing vote buttons don't convey?
This is also discussed in the comments on the original blog announcement.
One of the more common uses is when something might represent site abuse:
- posts with illegal content
- improper activity, such as astroturfing
Don't forget that we also tend to look at spam/offensive votes (plus the system handles these automatically if it gathers enough votes)... so generally the moderator flags are for when you need to say something additional (hence the text box).
If you think something should be community wiki then flag it for mod attention with a comment to that effect.