This document discusses strategies for making multiple streams of income through affiliate marketing. It presents two scenarios for earning commissions and calculates the return on investment. The key points are: 1) The first scenario earns a 19% return, while the second earns 59% by including residual monthly commissions over multiple months. 2) Residual income from ongoing commissions each month is more lucrative than a single commission. 3) Promoting products with residual income can build many small streams into a large, reliable source of income over time.