Best Response - More democratic ranking?

I notice that a 'Best Response' feature has been added to the community discussion board, but I am not clear on who decides what is 'best'?

Could 'Best Response' be developed so that it is the comment with the highest positive votes from community members or the owner of the discussion thread?

It appears that currently it is selected by a moderator, can someone confirm?

Appreciate the addition of the feature, but would like to see it extended!

Cheers.