Some people trying to figure out where they got the crazy virus that is attacking there computer have suspected that while watching videos on youtube they got infected. Is it a breeding ground for massive amounts of viruses? The simple answer is no. However that doesn’t mean that you should not be careful with links people post with there videos. Sometimes external links from there video posted on youtube leads to a site that is infested with viruses. That is were you are getting into trouble, not being careful where you click, you can go from a relatively safe site to big trouble in just a click. So watch how you use even reputable websites, don’t count on others, keep yourself safe.
