1) A chain of small supermarkets.
2) Someone who shamelessly manipulates others for their money - differing from a gold-digger in that a happy shopper usually pesters their friends, parents etc. rather than their partner.
3) Someone who is very good at using image manipulation programs, especially Photoshop
, and often photoshops things for their own amusement.
4) Someone who obtains others' unwanted items for free.