Lolz that's crazy... we should only take good ideas from Reddit.
I'm happy that most folks (in this thread, at least) seem to be of a similar mindset.
I struggled with Karma for a month, then I jumped on a few new 'DadJokes' and copy pasted a couple of puns - masses of Karma meant I could carry on trolling.
Votes are the way to push good/relevant comments upwards or downwards - and without value outside the thread, they'll only be used for that... as it should be.
I disagree. I use my votes to show that something is interesting (this topic - despite my disagreement - is an interesting one).
I upvote content I wish other people to see. I download content I wish to be seen less by others.
Whether I comment or not is not relevant... though if I don't like something, I prefer not to give it the traffic.