This question of mine, was never answered fully, so I'm asking you for help.
Every time I register for web hosting (usually on Linux servers), there are lots of folders named _vti_somthing (like _vti_cnf, _vti_log, etc) sitting next to the www (or public_html) folder. I never figuered what each of them are used for, and how harmful can be the deletion of all of them.
For the sake of this example, suppose that I'm on a Linux host with CPanel installed. If any of these folders are needed by CPanel, I'd like to know that too.