Hi, Welcome to Hacker News. If you get a chance, check out the welcome letter (http://ycombinator.com/newswelcome.html http://ycombinator.com/newswelcome.html)

Hi, Welcome to Hacker News. If you get a chance, check out the welcome letter (http://ycombinator.com/newswelcome.html http://ycombinator.com/newswelcome.html) which explicitly states that empty comments are okay as long as they're positive.