I marvel at the language skills of those who live outside of native English-speaking countries. Several friends speak two or more languages. I find that phenomenal. Although I have studied French and Spanish, I am far from conversant in either language. English is my one and only and sometimes I've wondered about that..
It may come as no surprise to those who read online that narrow text columns are preferable to wide ones. Good web developers pay attention to browser resolutions and screen sizes to ensure that their web pages are the right width. The length (i.e. word count) of an article is the writer's concern.
What you say might be less important than how you say it.
This holds true, in fact, even truer for material that is published on the web.
When your fingers do the talking, sometimes they trip over your words and leave your ideas in shambles. That's why it's helpful to establish and use a personal style guide.