Why just send somebody a link when you can send them the entire Web site?
One neat tool that I have been looking at for a while is the Amazing Webpage Emailer extension for Firefox. The folks at Download Squad have the best writeup about it I have found thus far.
With AWE installed in Firefox, you are able to email entire webpages to anyone you know, whether they are password protected, session specific, require registration or even have framesets. And when I say entire webpages, I mean entire.