If only a Snickers bar was the solution to peoples stupidity.
When people make spelling errors to the extent where it doesn't even look like the correct word anymore it is just scary. How do people not know the difference between board an bored. I can easily tell the difference but for some people it is so difficult to identify which one to use in different situations. I am going to hit you with a board when you are bored because you keep tweeting that you are board.
When someone mixes up words or spells things incorrectly, their errors stand out to me once I read their writing. I think that's all that counts. That you know when someone else or even yourself is making these kind of mistakes. Some people, which includes many teenagers, misuse public language on purpose just to use slang that gets the point across. We all have our moments when we mix up words or use their meanings incorrectly but I feel like as long as you know what you are doing is wrong and you correct yourself, that is all that matters.
On the other hand there are people that order synonym pretzels at the mall. Those people have no cure.Cinnamon and synonym are two completely different words HOW PEOPLE HOW. I have endless frustration with these kinds of people. If you were a good reader since kindergarten and you paid attention in spelling/grammar classes then you should be fine. Once you mess up in your younger school days you are done. Those days are what affect you the most because they are the basics of your knowledge. People that actually did academically well back in those days can distinguish your and you're, too, two, and to without any difficulty.
Word of advise don't space out when your first grade teacher is teacher is giving a lesson on grammar.