Last month- Groupon offered a deal to Old Navy where you buy a $20 voucher for $10. I did- and I used it to buy some gifts for Christmas. Not only did I get the stores sale price, but I paid with an instant 50% savings certificate!
And guess what? They are doing it AGAIN! Click over to Groupon where you can buy a $20 old navy voucher for $10. Good in their store only and the promotional value expires 1/28/12- but your original $10 you paid never expires. Regardless- I know I'll be going there before 1/28!!!
You are allowed to buy one for yourself and one as a gift. I gifted one to my husband so that I could buy two. Not sure if that is 'legal' or not- but it worked!