This document discusses Pay Per Click (PPC) advertising on Facebook. It explains that with PPC, advertisers bid on click costs and their ads are shown based on who bids the highest. It recommends testing different bid amounts like $2 per click which shows ads more but costs more, versus 5 cents per click which shows ads less but has lower costs. It also discusses using targeting to reach the right audience, setting budgets to limit spending, and optimizing ads for conversions versus just clicks. The goal is to avoid clicks from people unlikely to take the desired action and increase the percentage of clicks that convert.