URL and security

Giganews Newsgroups
Subject: URL and security
Posted by:  mun (vongm…@gmail.com)
Date: 10 Apr 2007

on some sites, i see the this type of url


why do they expose the next link on the url? will that allow the
visitors to modify the continue querystring and break the link? for
example, instead of example.com/script.php?continue=/second/page,
visitors may modify it to