I posted my product on Reddit. Here's what I have learned

I posted my product Spotlight on Reddit yesterday. Here’s what I have learned:

Don’t focus on upvotes
Upvotes != Sales. I received around 68 upvotes, which I felt is not bad, from what I expected. But, I got no sales from this.

Speak their language
Every sub-reddit has its own language. They like some words and hate some words. I used only the words they like and how they want to read.
Meet

Pick the right day
The day you choose is more important than the time you post it. For the sub-reddit I picked, it would be a waste if I posted it on Sunday.

I used http://laterforreddit.com for picking up the day.

What learnings you got?