This research paper explores the advantages and disadvantages of using online and social networks for business, focusing on the impact on Small and Medium Enterprises (SMEs) in Australia. The study examines the effectiveness of different social media platforms for marketing and sales promotion, compares social media with traditional marketing methods, and analyzes factors hindering wider adoption of social media by SMEs. The research utilizes both qualitative and quantitative methods, including interviews and surveys, to gather data from employees and customers of Australian businesses. The findings provide insights into the benefits and challenges of social media for SMEs, highlighting the importance of strategic implementation and understanding the unique needs of the Australian market.