Not everyone learns by reading. Some are more visual and audible learners.
By creating a promo video, you can quickly educate your visitors on your product or service. Not only that, you can use a technology like Wistia to add a call-to-action in the middle of the video to capture email address.
Videos also allow you to leverage third-party platforms like YouTube (world’s second largest search engine) and the social network Facebook which is poised to give video extra reach in their newsfeed.
A couple things to consider: