#pipedata=dirty in Amazon.com Purchase Url

So I made a tweet a few days ago about a parameter in the Amazon.com purchase URL, where there was a string that was exactly this:


The tweet starting bringing in some Google search traffic from other people noticing it, but in a quick search I couldn’t find anything about it.

Does anyone know anything more about this string?

I’m hoping this post gets picked up in Google for the keyword so some light can be shed on the pipedata. :)  I’m curious to how my Amazon pipes get dirty.
/insert “the internet is a series of tubes” jokes here