I wonder what the userDB says about any scarcity of upvoters? Are there many others like me? Am I not pulling my weight? Should I do it more?
Like this question? Otherwise I would downvote. Which I never do.
Yes, but if it has actual content. +1 comments are inferior to upvotes.
However "votes" for commenting suggested links makes more sense for me. It naturally expose topics that users willing to discuss and care about.