It is thanks to great English teachers that we can enjoy such great blogs on the Internet!
I know that I am supposed to give credit to parents and family for teaching us to speak English, but that is an entirely different "ball of wax." If bloggers wrote like their family spoke, only the locals might understand the vernacular. And really, how many locals even bother to read your blog?
So hats off to the men and women who taught you to spell, punctuate, indent, capitalize, use strong imagery, use voice, organize, use great word choice, use sentence fluency, and present/publish in a readable way.
Spell check on your computer will never replace good English teachers. Its only their four you're convenients! (It's only there for your convenience!)