Typography is an art. The way letters are formed on the page is prominent in the advertising and graphic design world. Advertisers use typeface to convey the message and grab attention. Here are a few examples:

This advertisement for Intermountain Guitar and Banjo grabs the readers attention with text. This text conveys the message but the typeface is rustic. This can be stereotyped as to what appeals to the customer of a guitar or banjo.

This advertisement for Harley Davidson resembles gothic typeface. This appeals to the rough edge that Harley Davidson is known for. The typeface is dark and dramatic, supporting the product and image of Harley Davidson.

The typeface within this Skittles Bubble Gum advertisement promotes the Skittles agenda. That is, it appeals to children. The type is bubbly font—also connecting to the fact that it’s an ad for bubble gum—and the rainbow tracing the letters is dramatic and will draw a child in with its colors.
Companies use typeface to convey their message. Depending on the product being promoted will depend on the typeface used. However, a company’s image is also conveyed through the typeface used. The typeface used makes the reader digest the advertisement in a tailored way. Advertisers are using the typeface as the message.