So how do I know which post gets point? and which not?
Sorry, newbie questions. I read the FAQ on the HN in regards of the points system, but there are not one clear answer...
Thank you.
But there are also aspects to the algorithms that aren't made public. Our host occasionally makes changes to help fend off voting rings, spammers, trolls, and other nasty and undesirable things.
Finally, there is no feedback as to things getting upvoted.
My recommendation is that you try to be informative, helpful, add value, and not care so much about the karma. Whether or not people see your contributions is largely luck anyway. Just try to work it out if you get downvoted to the basement - try to see why people think you added no value, or were wrong. The guidelines suggest not complaining about downvotes, and I'd agree. It doesn't help, and it makes boring reading.
And you're welcome. Just join in, and be useful.
Good luck!