Possible Duplicate:
How should I handle questions which are answered in the comments?

Hi. This one is more of a netiquette question.

Sometimes I stumble on "unanswered" questions that were actually answered - in their comments.
Those questions are shown as unanswered in the statistics.

For example: Composite javascripts in C# asp.net with the asp:ScriptManager.

What should be done?

1 - Flag the question so one moderator can somehow mark it as answered.

2 - Answer the question yourself (as a community wiki answer), mostly by copying the comments.

3 - Nothing. Move along.

EDIT

I'm talking about questions without activity for weeks or months.

Feature request

Give diamond-mods the ability to change a comment to an answer; and allow users to flag for this action.