Dropbox! I uploaded them from my computer and now I can read them on my iPod with the Dropbox app. Of course, I can still read them on my computer if I wish, but it is nice knowing that I didn't have to get another app and try to find out where the heck those pdfs were stored.
So, if you haven't checked out Dropbox yet, do so soon. No, I have no interest in the company, it's just a great application!