Now that I have an iPad, with lots of great PDF reader applications, including iBooks, I am a lot more interested in collecting PDFs to read on that fantastic facilitator of information consumption. Joliprint (link here) has made the process of making web content, particularly Google Reader more readable, by dropping it into your PDF reader with the ease of a bookmarklet.
All you have to do is grab the bookmarklet via the link above. Then, while you are browsing through Google Reader, select the desired post, hit the bookmarklet in your Favorites bar and voila! Instant PDF. Great for printing and reading. Once you have it, simply email it to yourself, open the attachment on your iPad and select the reader you want your PDF sent to.