On pukiwiki.sourceforge.jp, Reimy points out three serious problems with Safari 1.0. She suggests two solutins; one of which is to prevent Safari users from editing the page.
The most serious of the three is how Safari converts tilda into two-byte version of the same character (i.e. "~" > "〜" ); maybe this problem is *again* unique to those who use Safari under Japanese environment.
The two other problems are 1) it does not recognize UTF-8 automatically, 2) you cannot specify fonts with their Japanese name such as "ヒラギノ"
I wrote to Reimy asking permission to translate her points and trackback to Surfin' Safari for this article. She was kind enough to grant it and points me to another article by Nekomeshinikki article where s/he point out few more problems. I will look into them later.