The site's only a few days old, so there's not much to see, but enough to give me some advice. Be as harsh as you want, so long as it is constructive criticism. If you say "Your blog sucks, you stink" that's stupid and pointless. If you say "Your blog sucks, but if you did this and this and this you could improve it" then I can take criticizing.
The site is [ http://junction.negimaki.com/blog ]