Some webpages are encoded differently and not well-configured, so they may show up completely jumbled. One example is this page, originally in Japanese:
http://immanuel.sakura.ne.jp/hoby/osakaben/osakaben.htm
On desktop one can simply ask the browser to reload the page with a different encoding, but I don't see this option in many iOS browsers. Is there an iOS browser out there that allows the user to manually select the encoding?