Printing a page online usually means printing more than what you actually want.
Webpages are quite fancy nowadays, with ad banners on top, navigational links on
the left, and so on. That's fine when you're viewing the page online, but when you're
printing the page, you only want to print out the "actual content", and nothing else
from the page! Many sites nowadays understand this, and provide an alternate "print"
version of the document that surfers can go to and print out. Well, there's actually a
much more elegant and seamless way of accomplishing the same thing and that is by using
the <link> tag. IE 4+ supports a version of the <link> tag that allows you to specify to
the printer which file it should print when the user selects print. In other words, the
job of locating the alternate print version of the document to print out is left to the
printer, instead of the surfer.