[Scitr]

... and if your attempts at self-promotion using Show HN fail miserably, is it acceptable to the community if you try again using a different headline? If so, how long in between, weeks? Months?

[gus_massa]

A better idea is to write a technical blog post about a unique feature of your site. (Bonus poits for nice graphics or photographs.)

For example read: http://blog.wolfram.com/ All the blog can be resumed as "You can do a lot of calculations and nice graphics with Mathematica" But many of the individual post have interesting information (and nice graphics) and got a lot of points https://hn.algolia.com/?q=wolfram.com#!/story/forever/0/blog...