Not that vroom has that much spare time as I understand things, but would anyone find it useful to have optional one-line (max. 80 chars?) comments attached to votes?:
- if left blank, vote is recorded as it is now
- if filled in, the comment could be appended to the bottom of the node, with a prefix of ++ or -- as appropriate, perhaps only the first 5 or so shown.
- naturally the username would not be used (though I'm hesitant to provide more anonimity)

Hmmm.. this seems like it would make an awful mess, and what use would it really serve? People who are just blowing off votes would never fill it in (not politely anyway) and people with good comments would normally post a reply node. Forget it!