Are you providing the sessions or are you using a 3rd party product or are you using perl modules to do it? It really depends why the site is password protected to begin with. If you have no need for security but just have logins to change the look and feel of a site then I would say no. If you have parts of the site that contain personal information or information that is _private_ then I would say it might make sense to deal with the overhead of doing so. The devil is in the details -- what makes sense for one site may not make any for the next.

-Waswas