It looks like Jessica London and Avenue are one company now. I wonder if it makes the coupons work across the two stores, for example would this coupon work on Avenue merchandise?. If so then it makes sense to post all deals under one brand (e.g. Avenue)
I don't know. I never tried to test them on any other site. I usually take the code for face value of what it claims to be but give me a sec and I'll try it out at Avenue.