题目内容：

阅读下面短文，根据其内容写一篇60词左右的内容概要。

A 15­year­old boy planned to put a ball covered with petrol into his mouth and set it on fire. He would film the dangerous action and put it on YouTube. And, he hoped to become famous on the Internet. But things didn't go the way he imagined. His clothing caught fire, and he was rushed to the hospital with serious burns on his body.

YouTube hosts millions of videos of people attempting dangerous actions. Many of them are by kids and young adults. Some experts say that by hosting these videos, YouTube encourages young viewers to take deadly risks. Research by the Centers for Disease Control and Prevention shows that more than 180，000 Americans die from accidental injuries each year. That's one person every three minutes. More than 14，000 of those killed are kids under the age of 19. Is YouTube to blame?

People have always found it interesting to watch others try risky things. Audiences are mad about these kinds of things. Some of the earliest Greek comedies had characters followed by wild animals and knocking into walls. Now, in the age of the Internet, anyone with a camera and a YouTube account can create this kind of “fun”. Many viewers, especially teenagers, are influenced by what they see and want to try it themselves. “YouTube has taken the playing in the neighborhood to a worldwide level，” says Clair Mellenthin, a researcher from the Centers.

Supporters of YouTube argue that it isn't YouTube's responsibility to examine its content. “Parents should be the ones to make sure that kids are behaving safely，” they say. In fact, YouTube has a rule on content. For example, dangerous activities that have a risk of serious physical harm or death are not allowed. Staff of YouTube, carefully watch the website 24 hours a day, looking for videos that are against their rules. But is this enough?

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