Vendors need to commit to their "deals."
Maybe force the vendors to honor their event? The day you had the great event with DSW, I purchased two pair of sandals using the discount code (I think it was BESTWKND). The first thing that happened was for some unknown reason, my CC was rejected, so I used my Paypal account and an invoice was generated. The next few days I received emails urging me to buy the items left in my cart, only to go to the site and be told nothing was in my cart. I think the 4th time, one pair finally showed up at twice the price and the code had "Expired." I never received an invoice from them nor one from Paypal. Seems quite obvious DSW did not want to honor the "deal." I probably won't bother reading ITK because of this. Sorry.