How to let users to select the best answer?

When starting this module, I was thinking of adding a field "expiry" in each question. After this period, the best answer (using the VotingAPI, for example http://drupal.org/project/vote_up_down) is selected.

That said, I don't know when I'll implement this. A patch is welcome.

Correct the title. I think (well, I think) I'll implement it this weekend.

I'll be waiting for this feature too.

Use this patch against the latest CVS. I need to get it reviewed before commit.

Try this one instead (rerolled again the latest CVS change).

How to use?
- Apply the patch
- Go to the Q/A content type, create a new field "duration"
-- Type: Integer
-- Widget: Select list
-- In the configure page, enter prefined time in second, for example (unlimited, 1 day, 7 days and 30 days):

0
86400
604800
2592000

- Go to the Q/A setting page, select this field.
- Install VotingAPI module and another module, for example, vote_up_down (don't forget to enable "vud on comments").
- Go to permissions page, allow anonymous to vote on comments.

I've committed in the 6.x branch http://drupal.org/cvs?commit=442930, need port to 7.x.

Committed to the 7.x branch. Currently I don't know any voting modules available for D7. I hope that there will be more users giving feedback later.