Users can tell you more with actions than with words, this fact is long discussed by Jakob Nielsen as a problematic communication issue. Instead relay on actual information and gathered statistics.

Taking this into actions I looked at the detailed statistics of the site and saw that most people read the page linked from outside and immediately go to the link "Contact Me". I wasn't aware that having a biography was so important.

So the news are that I've added a biography section, to be updated every once in a while.