This and other ideas have been suggested. You can find a list of these things in the forum. As of now, there are no plans to have a yes button. We feel it would encourage too many drive-bys. Check out the forum for everything that's been suggested:)
my first reaction was to Like this suggestion. but on second thought, it could lead to wanting to add other buttons, leading to button inflation... so, maybe it's best to comment on the song comment with your own thoughts instead
Ruby, I think before we discussed the "Like" button on the song itself, not the comment. The preponderance of comments were against putting it on the song. As far as adding a "Like" button to a comment, I'm not sure this has been discussed. I could be wrong about that, but that's my recollection. I think we should be open to the idea, especially if we keep getting requests for it. Maybe others will chime in. I think this is one of those requests that will keep popping up from time to time.