You’d better hurry if you want that $10 bonus. Google Checkout writes:

Sign up to earn your $10 bonus
If you’re new to Checkout,
!E Sign up between February 16, 2007 and March 31, 2007, and we’ll automatically apply your bonus to your first purchase of $10 or more (pre-shipping & tax) from participating stores.
!E Bonus expires April 30, 2007 and can’t be used with other Checkout promotions.
!E Limit one per buyer only.

So, don’t delay! If you’re going to do some online shopping, you can save yourself $10 or you can buy $10 more worth of goodies! hah! And Google Checkout is accepting registrations from many countries now! The challenge now though might be getting orders to your home country!