[gus_massa]

All users with at least 31 karma can flag post. With enough flags, the post gets marked as [flagged] and with more flags it gets marked as [dead].

You can email the mods to get an official answer, but it's almost sure they will just reply that.

[onclickcheckout]

how do you get karma? or prevent getting one?

[tastroder]

Would you please refrain from creating new accounts to post duplicates of this? That's in the guidelines as well. HN has an e-mail address down at the bottom if you want to get in touch with them to potentially get this one changed.

[jerrysievert]

there are a few links at the bottom of HN that can help you:

https://news.ycombinator.com/newsguidelines.html - these are guidelines on what is and is not appropriate on HN. they can help guide you toward what are appropriate posts and comments.

https://news.ycombinator.com/newsfaq.html - FAQs that answer a lot of the questions that you've been asking.

https://news.ycombinator.com/showhn.html - the (very specific) rules on what "Show HN" is, and why and why not you would post to the special "Show HN" section of HN.

I would recommend reading them thoroughly before continuing to respond, as it might help temper some of your comments and the responses to them.