Maybe there should be four buttons:
- Upvote-good comment
- Upvote-agree
- Downvote-disagree
- Downvote-unhelpful/rude
Which could be used for more filtering options.
Or maybe a separate agreement/disagree metric. I wouldn't mind seeing the consensus on a topic separate from the measure of usefulness.
If you call them PanoPods you can probably get venture capital funding and then just go buy a train and paint it with a cool design.