For dotcolors.co I launched everywhere on the same day.
First on PH (due to the midnight timing.)
Then on HackerNews (who just flat out hated on me)
Then on IndieHackers (who loved it)
I then went on to do some research regarding other platforms to launch on after implementing some early feedback from the above platforms and finally launched on DesignerNews. (Which got me featured in all sorts of places)
So I think PH, HN and IH are good to gather initial feedback and see if anything is still rough around the edges and then you can deliver a semi-polished product to your niche. :)
For dotcolors.co I launched everywhere on the same day.
First on PH (due to the midnight timing.)
Then on HackerNews (who just flat out hated on me)
Then on IndieHackers (who loved it)
I then went on to do some research regarding other platforms to launch on after implementing some early feedback from the above platforms and finally launched on DesignerNews. (Which got me featured in all sorts of places)
So I think PH, HN and IH are good to gather initial feedback and see if anything is still rough around the edges and then you can deliver a semi-polished product to your niche. :)