It's pretty safe to say that everyone has heard of youtube. If you not an avid creator or watcher, you have at least followed a link from an email or some social networking site. It's huge. And it has made it's founders very rich.
If you take a look for reasons why YouTube was successful you might hear that they made it simple for users to steal copyrighted material and share it with other. Through a legal loop YouTube made it okay for them to post material because it was the users responsibility. The whole Napter/Metallica debate all over again - bleh. Although, there is some truth to that I want to look at some design elements of why it was successful and also some human perspective.
Easy to use
As far as design it is very hard to make a complex thing simple. Web developers struggle with this often. YouTube made it simple for users to put up videos and not worry about which format it was in. It automatically converted everything to Flash. Flash plays reliable across platforms both Mac and Windows.
Easy to understand
Whether you received a link or heard a mention on the news, once you are at the site, you understand it. You don't have to sign up to view videos. If you did want to it, it was just a basic sign up page.
Easy to share
You want to share it. YouTube wants you to share it. And they made it simple to do so.
I wish I could pinpoint the source of this interview but I will tell you what I heard. Upon asking one of the creators what made YouTube so successful, a very unique perspective was born. I'm paraphrasing here:
Interviewer: So what made YouTube so successful? Was it the timing? Were you the first ones to host such a site?
Creator: No, honestly, there were plenty of other website at that time doing exactly the same thing.
Interviewer: So, then it must of been the the technology? Did you have top of the line video hosting software?
Creator: Others sites had even more sophisticated site.
Interviewer: So the marketing then?
Creator: We had very little marketing money?
Interviewer: What made it so successful then?
Creator: It's because we appealed to the user. Our slogan was "Broadcast Yourself" and people were encouraged to do so. It was appealing that human emotion to be seen and to see others in a new way that made it so successful.
Again, that's a paraphrase, but the point remains valid. YouTube applied to the human side of websites. The human side of websites is practically the majority of web use and certainly of bandwidth. However, are there some ideas like this that have not been tapped into? Is there a website that needs to be created that will appeal to the human emotion, easily understood and operated and waiting for the right person or company to come along?