As far as print preview goes, it is indispensable when it comes to printing from the web--for some reason, stuff just comes out weird from the internet.
In my experiment with printfriendly.com, I got an 8 page article down to 3 pages without doing anything besides just copying the URL into printfriendly. It's so neat how it magically removes the ads. Yay!
As a side note, I am currently about 40 pages from finishing Mansfield Park. Yesterday in class, one of my classmates semi-spoiled the ending for me during discussion. It is incredibly suspenseful none-the-less--in that way that only Jane Austen can be.