http://www.qdoba.com/EnthusiastEclub.aspx
Join the thousands of fans professing their love for the handcrafted food that can only be found at Qdoba. They reward their dedicated e-Clubbers with exclusive offers, information about new products and restaurants, local event invitations as well as a gift on your birthday; all delivered right to your computer. It 's Free!
Free chips and salsa voucher for signing up.
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I borrowed this freebie from another great freebie site. I'm not sure what all the specifics are....but you do get the voucher for signing up. I'm not familiar with Qdoba at all.