iBooks has samples, but do people really read the samples? I do, and that’s only because I always am looking for new reads.
But the main reason for me to talk about this is the new Tom Clancy novel, Dead or Alive. The only reason I bought that book in iBooks was because I thought the sample that they gave was extremely generous, over 4 chapters! I guess they wanted people to buy it, but I think that the sample for that book was so generous that I am very surprised that no other publishers actually thought about that before.