Abstract: A method of marketing by delivering advertisements and promotional offers to groups comprises preparing promotional offers to be redeemed by groups meeting predetermined conditions related to number of group members, group members' ages and gender, location and anticipated time for promotional offer to be redeemed, and delivering such offers to groups meeting such conditions. Delivery of promotional offers is done via any combination of the internet, a proprietary group server, an advertising exchange, merchants' and publisher's web sites, and cellular communications networks. Redemption of offers is reported to participating entities so that an accounting for revenues may be completed.