There are a number of "how to make the front page of HN" that you can google for, but it's as much art as science. Definitely a luck factor too; your post may g

There are a number of "how to make the front page of HN" that you can google for, but it's as much art as science. Definitely a luck factor too; your post may go viral, or be bogged down in a flame war about bitcoins. But given that it sounds like you just want to promote your projects, you may want to google (or search HN) for general advice on marketing, and how to reach your intended audience. You can also go for the meta approach, and Ask HN how to get the word out about your new site $AIRBNB_FOR_DOGS, then use any advice you find to post a Show HN later. :)