You choose to write as you like.
Think as if you were writing on a note pad after a day’s work. Will you write 10 pages or 1 pages?
I like to post short text. Most of them are more motivating then informative.
I like to write stuff that are hitting like a bang! Stuff that should not take more than 30 seconds to read. And from time to time, I write longue post that are more technique.
I see a lot of people posting long post that are quite boring to read. Put the good stuff in you post and don’t fill it up with boring things. If you have 10 lines of good stuff, then you should post 10 lines.