But I have to say, a superb book - one of the best SF books I've ever read. AS OSC's rather pompous introduction makes clear, you shouldn't really regard it as a sequel to Ender's Game. But it is best to read Ender's Game first - if he hadn't written EG first then Speaker for the Dead would have to be quite a lot longer, and wouldn't have been as good.
After I bought the New Scientist recommendations from Amazon, they in turn recommended this. I thought it was quite good, although some bits of it were silly and there were also some dreadful spelling mistakes. And I felt it owed quite a lot to Hyperion. But the main problem for me was that there were so many threads that each time a character reappeared I had to rummage back through the book to find out what he or she was doing last time they appeared. It's a very thick book, and part of a trilogy, which seems the fashion these days in both science fiction and fantasy: endless series of inflated sequels. Why can't anyone write one good, mid-sized book on a theme, and then leave it and write something else? I suppose there is some quality history behind it - Asimov, Arthur C Clarke and Frank Herbert for SF, Tolkien and Lewis in fantasy (and even Terry Pratchett to some extent, although at least he makes each of his sensibly sized books complete in itself.) Still and all, I imagine I'll read volume 2.