The best replacement for shutterfly is snapfish.

The best alternatives to shutterfly are rated as following:
★★★★★  snapfish
★★★★  flickr
★★  photobucket
★★  picasa
★★  kodak
★  smugmug
★  mpix
★  picaboo
★  mixbook
★  blurb
★  dropbox
★  mypublisher
★  iphoto book
★  iphoto
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  walgreens
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  flicker
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  picasso
  vistaprint
  apple photo books
  blurb books
  creative memories
  my publisher

Your alternative for shutterfly is not listed? Suggest!
Speaking about shutterfly, one probably shouldn't forget about free shipping.

Other search terms related to shutterfly and their ratings are:
★★★★★ free shipping
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Google Trends

Scale is based on the average worldwide traffic of shutterfly in all years. Click on graph for more.
shutterfly
snapfish
flickr