The white text at the top of the page (username, log out,meta, about, faq) are a little hard to read against the background. The tags are also hard to read. The grey background might need to be a bit darker for more contrast. The special badges, like the ones given for 100 posts in a given tag, are ok as the background for those are dark enough and provide good contrast.
I have bolded the text on the top. please let me know if you're still having problem reading the text.
I agree. You have to realize that Jin designs on a Mac, where every font looks bold.. :)
Probably we should bold that top line to make it more readable.