billboard

Billboards, banners and signs have long been a great way to market a product or service. This method is sometimes referred to as ~outside advertising~ because you can find banners, bumper stickers and much more around all over the place. It was one of the earliest methods of marketing and still is effective today.

A mysterious billboard with a mathematic message has sprung up in Silicon Valley. Many people thought that this billboard was a recruiting technique devised by Google to draw in top-notch engineers. They were right.