Reposting Twitch streams on YouTube.

What about the Chinese website http://www.youku.com/? :D ?

I just checked Youku and found several drawbacks.
Firstly, registration is only possible via a mobile phone or through Chinese social networks. You can't register with an email address.
Secondly, the default language is Chinese. I found a way to change it to English (http://www.askmefast.com/How_to_open_youkucom_in_english_language-qna5700849.html#q3841758), but it's still quite a hassle, especially since you can't change much without registering.

Are there any other options?

Added 4 minutes later
What about Vimeo?