But there's also a lot more books that are mentioned without the Amazon link. On the top of my head "The cathedral and the bazaar" is probably mentioned zillions of times. Are you thinking of handling that as well?
Sure, now only Amazon, Safari and O'Reilly links are processed, for the rest I'd need to recognize the website, make sure that it is a book and then get some meta.
Think GP is referring to book titles in mentioned in comments without a buy-the-book-here link eg
"Two books i always recommend reading are 'The cathedral and the bazaar' and 'The Mythical Man-Month'."
