The Belgian food retailer Colruyt used online non-food retailing not only as an important margin rich extension of the food assortment, but also as a traffic builder for the supermarkets. (Retail Economics)

Brands are always looking to create engagement. They also want to participate in experiential opportunities to broaden awareness. Your traffic builder could be just the activation and target audience they’re looking to market to. (Forbes)

Another low-cost traffic builder is online discussion groups and chats. Where appropriate, give out your URL. Look for places in which you can join in discussions on topics that relate to what you sell, but don’t be a salesman. Be knowledgeable, show your expertise, provide helpful solutions, and point out great articles on the topic. (Entrepreneur)