0.005% of Yacapaca users run quizzes on the Sony PSP. That is not enough to justify the additional complexity in the user interface for everyone else, so as of today the PSP quiz template is no longer available. We will migrate all the old PSP quizzes to the Flash 10 templates very soon.
This does not mean we are giving up on mobile platforms forever. I am particularly taken with Android as a platform that makes huge sense in the third world especially, so look out for new excuses to buy cool gadgets in future.