Marketing is a different world from the one that existed a few decades ago — more than that, it is different from the way it was even a few years ago. Modern technology has changed so much about the way that people go about everyday tasks that it now permeates everything that they do. As a result, when trying to reach people through sales and marketing, it should come as no surprise that technology is an integral tool to use.
A lead magnet (a.k.a. an optin bribe) is something amazing that you give away for free in exchange for an email address. This doesn’t have to cost you anything to create; most lead magnets are digital materials like PDFs, MP3 audio files, or videos that you can create yourself at minimal or no cost. It can be absolutely anything you want, so long as it provides value to your visitors for free.