title: How do websites use different URLs for each page?
body: <p>I know that you can insert in the URL a variable with GET like this <code>www.website.com/search?q=wow</code>. I am using this method on my website as well. What i don't seem to understand is how site like YouTube use <code>www.youtube.com/user/wow</code>. Do they actually have different files for each user or is it a similar technique?</p>