I'm not a Web Dev, and not familiar with Html, Php yet... Since I started in many forums, I got some interest in this matter, I confess, but I'm still a rookie in this subject... Well, here's my question:
When you host a file (no matter which size is) in a site this file could be accessible, as long you allow it, for others to access it too.
When someone put a link to download directly my file, anyone can access my file without having to enter the site where I hosted the file, huh?
So, imagine now millions of users doing this same thing. And millions of users accessing at same time this same link to download my file. What happens? Does this site will be overloaded with too many requests coming from everywhere?