Placing ad sense ads in a web page is a very common and valid thing to do which helps many website owners to carry on with their efforts. The way the ads are placed is also within a valid way and I do not think they are placed in such a way it interferes with the readers since they are not in the middle of the text. I might be wrong, but I do not think there is anything wrong in placing ads in a website while working on it and trying to share information with others. There are millions of websites using these methods in a very valid and proper way, a few of them do create the website for the ads, but it is not my case and, although my site might not be great or anything like it I do as good as I can, and I do not think it is nice nor helpful to say something like that based on such a subjective opinion.
If you or anybody else has any constructive comments I will be always happy to hear them.