For the lurkers: If you like the Monastery and are recommending a book in your node, you may wish to provide a FatBrain link so that Vroom gets a small kickback if someone buys a book through that link. To do this:
Locate the book's ISBN number, according to FatBrain. (Use their Search feature to find the most recent edition, as appropriate.)
In your node type [ isbn:// ### | Link title ], where ### is the ISBN number.
Test your link while Previewing your node. (I usually open it in a new window.)
Construct the URL as if it were provided by The Monastery. For example, suppose you wish to refer to Llama3 from another web site, define your A HREF as follows:
Here's an excellent book for <a href="http://www1.fatbrain.com/asp/BookInfo/BookInfo.asp?theisbn=0596001320&from=MDZ411">Learning Perl.</a>
The &from=MDZ411 parameter is what tells FatBrain that The Monastery is the referring associate.
P.S. Random HTML trivia regarding your .sig: Netscape 4x doesn't understand the — entity; however it does support the character code version, e.g. —. If you're interested in the support found in older browsers for other entities, this seems to be a reasonably complete reference. It is a little out of date, though.