I finally found the url for my decade old MSX blog: pentaro.blogspot.com. It is long since gone, but a snapshot lingers in Internet Archive:
https://web.archive.org/web/20070729133047/http://pentaro.blogspot.com/
I decided to restore my old posts, now they are up! Of special interest is the “Microsoft News Release” post :)
Update: found another, even earlier attempt at blagging (in Russian!) https://web.archive.org/web/20041129084011/http://tht.net/~aoboroc/. Translated and imported old posts from it.