To make it short: no, of course you do not need it necessarily. There are many very successful pages out there that don't sport videos.
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But it sure has its advantages! YouTube as the biggest site right now (and judging by their popularity it looks as if they were here to stay) for example had a 75 Million unique visitors in just one dominickolvt922.edublogs.org/2022/07/03/25-surprising-facts-about-convertisseur-mp3/ month (April 2008). Think about the potential for your website or your blog if you could tap just the tiniest part of this huge pool of traffic. You possibly get the attention of people that otherwise never would have found you.
Another benefit form a video on YouTube are the valuable back-links that will increase the page rank of your site.
Studies have shown, that you have to capture the attention of your visitor within the first ten seconds. If you fail to do so he will simply leave and you possibly never will see him again.
When you have to read something on the Internet you are about an 25 % slower than if you would be reading a real book. If you want to save your visitor this trouble a video is the solution. In an easy to digest way you can present him the essence of your message on a tray.
You can add a personal touch by putting a video of yourself on you blog. It is an attractive way to show your readers "the face" behind the intelligent comments they get to read from you. It is one way to create a more personal relationship with your readers that might motivate them to stay with
