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SO anyone from Amazon, Barnes Noble, J Wiley and Google take notice as I'm off to see a VC. :)
I think you'd be most happier by showing a tower ad with books you selected than a random selection provided by Amazon. But that's just me.
For at least one of the links types you can enter a search string/variable in the referrer/link/iframe (whatever link type) url and books for that search term are returned.
Just checked my site which has Amazon links (probably not been there for a while - lol) and the links still work OK - EG, On a page I have on the Roman Empire I enter the search string/variable as Roman Empire and related books are returned.
If this is what you are after just have a look at how the Amazon link url (for some links) is broken down :)
Not sure if this is entirely what you are looking for though as you would probably have to add each search string to the url for each page - but should not be to hard to do dynamically
I don't think it's a matter of laziness. I do put ads for hightly targeted books on content pages. OTOH there are pages where a constantly changing tower of related books would be nice. You can do that in terms of catagory with Amazon now but the other was so much better.
However, Amazon has no web site spidering or search engine technology to implement such a feature
Um, yes they do. It's called Alexa. ia_archiver is the spider.
I'm surprised they haven't launched a content book ad system as well.
Actually, come to think of it, they must have the technology. They show targeted ads on the alexa results pages.