I downloaded and printed to paper a copy of The Podcast User Magazine itseems to have been just released. You can download it as a 4.5Mb pdf file. At this moment I am about half way through the 24 pages. It is well worth a read and of interest to podcasters and listeners. There is even a piece by Mark Hunter of tartanpodcast about why he left Adam Curry's Podshow.

If you are looking for a rare book that is out of print Abe Books is very good. It is a collection of book sellers from around the world, so when you search on the site you are searching the catalogs of all the bookshops that are members.

The Scotsman newspaper has a digital archive of every issue from 1817 - 1950, you can access it for £7.95/day.