Spam is a popular advertising medium primarily due to its low cost per impression, allowing advertisers to reach many individuals cheaply.
The main reason spam is so popular as an advertising medium is A) Its low cost per impression. This is because sending out massive volumes of unsolicited emails, or spam, incurs minimal expenses as compared to traditional marketing channels. These low costs allow advertisers to reach a vast number of potential customers without significant investment, making spam a high-volume, low-cost advertising strategy.
Additionally, while the rate of return on spam may be low compared to other methods, the minimal costs involved can still make it profitable. Spam can also reach potential customers across multiple countries, but the quality of its workmanship is not a factor in its popularity as it typically doesn't involve well-crafted messages or designs.