A personal reference letter is a bit different compared to the normal typical reference letter. The reason why this is so is that a personal reference letter is from a person who knows the subject in question personally as opposed to having merely a professional relation. They are normally used when one is job hunting and they mostly focus on the qualities that make the candidate most suitable for a given job position. This reference letter also has more personal and less formal tone as opposed to a typical reference letter that has to maintain strict formal tone. These differences mean that special consideration need to be taken before one writes a personal reference letter.