The blogging engine is a hosted WordPress with a Personal plan.
WordPress has been a work horse for me in the blogosphere for years now. I was initially drawn in by its freedom, and the attitude with which WordPress is being developed. If you like to know more, google for Matt Mullenweg (of Automattic), or visit the WordPress page.
If you want to reach me, Jukka, via email, drop a note at:
jukka.paulin (in) gmail.com
Scan the QR code with your mobile, it contains my email address.