
Imagine a block on your website. The block comes alive and you directly communicate to your audience. This is one of the most effective means of reaching an audience if it is properly used, video can add interest to the website. Be aware that anything with a substantial file size may cause problems. Videos are among the largest files on any site. It's a common practice to put the actual video on another server and access it from the page being viewed. This practice often affects the quality of the image.
Video may display differently on different computers. Some viewers may not have their computer properly configured to see video. Some viewers may not have audio capability. Audiences have been trained to expect quick messages, so the message should be short. This isn't to say video shouldn't be used however. It should be used with an awareness of it's limitations.