Saw an ad for: Poshmark On: Instagram What is Poshmark: Women can buy and sell women's fashion through Poshmark. Why it worked: Poshmark used a picture of Victoria's Secret Pink products with a caption that said something along the lines of "Get Pink for less." I'm ALL for getting brand name products for less than retail price, so the picture and the caption hooked me right away. I'm an avid thrift shopper so they definitely targeted the right person.