Does anyone know if it is possible to create a Madlibs-type ePub book that could work on an iPad or iPhone (i.e. it would let the user enter in text that would then appear in pre-defined locations throughout the rest of the book)? I did a search of the iTunes bookstore and didn't find any Madlibs ePub books (although I did find some apps). Does anyone know of some workaround that would let me do this with an ePub book? Thanks.