While adding general comments is very useful, some programmers
					tend to leave important data, such as: filenames related to the web application,
					old links or links which were not meant to be browsed by users, old code
					fragments, etc.An attacker who finds these comments can map the application's structure
						and files, expose hidden parts of the site, and study the fragments of code
						to reverse engineer the application, which may help develop further attacks
						against the site.