I’ve been notified by Amazon.com that 109things has violated their Amazon Web Services Customer Agreement.

The case in point was 109things’s historical price and sales rank charts. Although it was a super useful feature to buyers, sellers and authors, Amazon’s agreement stated clearly that users of their web services cannot cache sales rank and price information. I was gently reminded of this via an email today.

Therefore, I have removed this feature from 109things. Sorry folks, it’s history now.