There are a couple of ways to share photos using Shutterfly. One is to invite selected people to come view the images. If they want to buy photos, they then sign up for an account. Another method that has become increasingly popular in recent years is to share images publicly with the entire Shutterfly community and effectively, the world. There are general topic areas as well as themes for holidays such as Christmas and Father's Day.
Photo sharing is another easy to use feature that has no apparent bugs and offers any support required during the process.