Hudson's Coffee is an Australian coffee shop chain with over 70 stores across the country and a loyal membership base of over 150,000 customers. While Hudson's has found success in airports and hospitals, the document recommends utilizing their large customer base more effectively through promotions and rewards for referrals. It also suggests expanding to new locations like train stations to capture more customers. Social media, email, and in-store signage are identified as key communication channels to promote new customer acquisition strategies.