Take it philosophically. I too recently on habré, made comments and communication via PM (not in the sense that beg for karma, but just helped, than could, I'm not hard, even it was nice) All you get! Yes, at first very hurt when the cons, but the main thing is not to slip into a grumbling, like, what kind of wacky rules that people are angry. I won still the most sensible article that I received an invite, with 3 pros, and any passing notes on current events at 50 plus, just because it fell on the main. Oh, what an injustice! Fuck the rules, why should you bother about that you can not change? Write explanatory comments, communicate, have fun, and grow your karma. And yet we should not forget that the Habr is the audience of a half million people a day. Where else can you find a freebie to as many people to hear you?