Twitter banner ads in JP UI in IE only

Now Twitter comes with the banner ads in the upper right corner when you use IE from Japan IP address (presumably).

twitter banner ad japan ie

This is a great experiment for twitter how the banner ads work. However, I personally don’t like it makes it Japanese UI whenever it finds the user from Japanese IP address (which is quite common practice though). The same exact mistake google makes.

Update: They allow you t0 choose language in the settings.  When you choose English, Japanese UI and banner both disappeared,which is nice.