Shutterfly takes $10 off orders of $10 or more via coupon code "BUMP10". That's tied with our mention from last month as the best dollar-off coupon we've seen from Shutterfly. Shipping starts at $1.79 and sales tax is added where applicable. Deal ends March 28.
Update: Shutterfly also offers a free5x7" personalized card via coupon code "CARD4U". Shipping adds 99 cents. Even better, it stacks with the coupon code above.