[Zope] Why GUF or Loginmanager??

Hallo, I'got a fundamental question: Why should you switch from the built-in authentication mechanism to a product like GUF or Login-manager?? Except of the different login interface, I dosn't see any advantage?? Please correct me. What I'm looking for is a product that redirects the authenticated-user to the part of the website where he has got his "home-folder" and also nice wolud be a search-function which gives an administrator a list of all the users with all the roles in the system. -- Sent through GMX FreeMail - http://www.gmx.net