There are two ways to increase profits: getting more visitors and increasing sales per visitor (SPV). To get more visitors, businesses can buy targeted traffic, send emails to opt-in mailing lists, pay for banner ads or commissions, submit links to search engines, do link exchanges, or use viral marketing techniques like free reports. Increasing SPV involves optimizing the website and offerings to encourage more purchases from each visitor. Testing various traffic sources and SPV strategies is important to find what works best for each business.