They expire eventually, and if you want, you'll find new codes to use at any given time. For example, read the thread on the maxtor for $50 after rebate (AR) and you'll find a GREAT code for $30 off any order of $100 or more at staples.
Lotsa places list coupon codes, plus, II get these $10, $20, and $30 coupon codes in my mail from staples mailing list anyway. Tis another way to get them...
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