All rights reserved. Inc. All rights reserved. Making typos, misspells, and such are kind of like going out in public with your hair messy or your shirt tail hanging out. Not a big deal, but they make can make you look bad. You want people to read your posts, so you should attempt to make them easy to read.
Short paragraphs tend to be much more readable than long ones.
Single spacing is better than double spacing. Bad formatting is a worse sin than bad spelling. They help to point out sarcasm, indicate humor, etc. I don't know. I've noticed that it is common to see messages formatted like this.