Yeah HN is definitely a great community. It's not a bunch of people being snobby and rude like you would find with traditional forums. I've only been a member of HN for about a week, but I'm addicted because of the positive attitudes that the majority of the members have.
By the way, I'm also loving RoR. I went through some training on it a couple of years ago, but I was already set on PHP and didn't take it seriously. Now that I'm actually learning RoR I can't believe I wasted my time with PHP all of these years. I'm not going to say I hate PHP, but RoR makes things so much easier in comparison.