Dealzmodo: $20 off Leopard, $10 off Leopard Family Edition

Excited about all the new features in Leopard? Buy your copy from Amazon and you can get $20 off the single-user edition and $10 off the family edition. No catch as far as we can see, other than the fact that you're pre-ordering from an online store and thus probably won't get the product exactly on October 26. That's the price you pay for saving a couple bucks. [Single User and Family Pack]