I just hate the lack of any punctuation. Punctuation is what allows you to break a paragraph apart into intelligible sentences. A bit of mispelling here and there doesn't bother me so much but when you get a wall of text and not a single period and not even any capitalization it makes it very difficult to read. As so many people here have already mentioned use a spell checker, it should help you learn to spell better anyway. Using correct grammar, spelling and punctuation is a good habit to get into anyway. When you send a cover letter and CV into a potential employer that is the very first thing they notice. It doesn't matter how great you may be at a job. If they cannot easily read what you have given them then they will not read it.