Answered[ Edited ]
Oh I dimly remember that, which means it's from sometimes in the last 6 month.
I just google "___insert shop name here____ coupon" and usually the first one that came up is retailmenot. I signed up for the mailing list of all the brands (Clinique, Origin, Estee Lauder, Beauty.com and Sephora), then keep a beauty calendar of what promo they have which month. Since their big promotions (7 piece gift with $35 purchase or $25 worth of gift with $10 purchase) are similar year to year and occur on the same month, it's good. For Sephora, every time they have a promo code, I jot it down and every couple of month or so, I do a search online. So right now, there's like 10 active promos for Sephora and if I place a $10 purchase on Beauty.com, I get .5oz of DDF serum worth $25.
It's much easier when I have a separate email specifically for promos and coupons, but then it's a little embarassing when people ask for it cuz I made it in 8th grade, so it's like silver_swan_on_the_moon or something.
@amit123, use rikki's thread http://community.sephora.com/t5/VIB/Active-Promo-C
it has all the latest Sephora codes. We cannot directly link to any other sites on BT but the suggestion made by beauty tester a year ago is still valid, google rocks!