It gives my visitors a very welcome feeling, making them want to stay around. I have received a whole pile of comments from my visitors to back this statement up. Easy to understand. I am happy I found you. This makes me realize that people want personalization.
People like to be entertained while learning.
I have learned that my visitors like my site the best when I relax and talk to them on a personal level. Of course, I haven't thrown professionalism out the window. In reference to the tutorial, it is relaxed but in a professional sort of way, if you get my meaning. Relaxed style means a more friendly, one on one type of writing style. Professionalism is clean, smooth reading material, error free and, well, professional.