Hi Zbyszek!
Yeah i enjoyed the Ender books...the only Orson Scott Card books i have read unfortunatly...My favorite was the first of the series.
ONe thing i really liked about it was the Net. Cant recall what it was called in the book but remember how there was that forum like site where people discussed political happenings of the day etc. remember a manifesto of some kind was being dispersed on their web.??.. I dont know what year those books were written, i think quite a while ago. But that is exactly what the forums are today it seems to me. Those parts of the book are an amzing premonition of what is happening right now right here!!!!