Quick note that we've just updated the Review Settings page to make the Popup Review more customizable. Anyone who has not stumbled to this page yet can find it here:

http://popupchinese.com/account/review

As of this morning, assuming a question type is enabled for your account, a slider will appear that can be used to control the relative frequency of each question type relative to other enabled questions. For those who want to reduce the frequency of generative pinyin or english questions without disabling them completely this might be a better solution.

All the normal caveats apply -- this is all new code, so please report problems since we may not be aware of having broken things. Please also note that for iPad users tap-and-drag does not work, but tapping the slider range in the spot you want the slider to go will reposition it.