Empty comments can be ok if they're positive. There's nothing wrong with submitting a comment saying just "Thanks." What we especially discourage are comments that are empty and negative—comments that are mere name-calling.
1) It is indeed my fault for replying, I thought flagging is only available for users with a certain number of karma but apparently you have to click on the comment for the flag button to appear (which is weird).
2) The number of karma I have doesn't affect the correctness of my statement.
https://news.ycombinator.com/newswelcome.html
https://web.archive.org/web/20090206141746/http://www.ycombi...