Should I have to write technical articles in English?

One time, when I was working with Google AdSense team, they suggested me to create the technical English sites so that the revenue would be getting better.

But, you know, I am Japanese.

I have iPad and iPod touch, and I can change the language from Japanese to English for temporary. If I want to go back to Japanese, select [iPad Language]

then select Japanese.

and tap [Continue].

Yeah, I could do that and write the English versions unless I have a lot of my plate.

Actually, I am really tired of managing the whole contents on my websites because there are over 10,000 pages on wanichan.com. I need my clone.