Well, the user should be allowed to easily program it to send the notifications (or any other stuff that the web page may do) to a file (e.g. /dev/null) or to a

Well, the user should be allowed to easily program it to send the notifications (or any other stuff that the web page may do) to a file (e.g. /dev/null) or to a pipe (e.g. a program that filters notifications).