I see that most of your comments are of the same kind, and that you get lots of downvotes.

The reason for the downvotes is that the Hacker News feels like appreciation is best communicated through upvoting: it helps sorting the comments in order of relevance, and avoid cluttering the thread with +1/-1 comments.

It is perfectly okay to upvote (and often downvote) without commenting; don't feel forced to participate either, it's perfectly okay to lurk until you find a topic you can actually contribute to.