If you're wanting ROI, don't forget Email Marketing
Email marketing is a proven marketing tool and to put it very basically, it works! For many small businesses email marketing has proven to be very effective at delivering a measurable ROI and increased sales. What makes email marketing effective is the powerful email analytics which shows you who is reading and sharing your emails with others, how many email subscribers have visited your website and which pages. It allows you to target and refine your email marketing activity further, identify those most interested in your business, and recognise what people find most interesting about your service or product.