1) Superknjizara.hr is a Croatian bookshop that ran a mobile promotional campaign using RenzooPush technology to promote their online store and increase brand awareness. 2) The campaign asked participants to recommend the bookstore to 5 friends via text message in order to receive a surprise book. Over 2000 people opted in and over 400 sent recommendations. 3) The campaign was successful in getting the bookstore's name out to many new people and in acquiring contact information for future campaigns, though some participants felt they should have had a choice in the book received.