>>1
Reason 1.
　「串刺し」の書き込みを嫌うから。
　In 2ch「串挿し（kushi-sashi)」means not a Yakitori .
　*「串」means 「Proxy（プロキシ≒プロクシ ）server」
　*串を挿す＝through the Proxy server
　When the criminal writes it through foreign proxy server ,it is difficult to find original IP.

Reason 2.
　３馬鹿諸国の基地外からのアタックを防ぐ為。
　To prevent Attacks from Kitty in Non-amiable neighboring country.