Yes sorry, my bad. Here's some more detail I found about the materials and manufacturing of these notes, taken from this PDF

"A contract for the supply of polymer material and associated security features was negotiated with Note Printing Australia (NPA), a wholly owned subsidiary of the Reserve Bank of Australia. The Bank has collaborated with the Reserve Bank to ensure that the supply of material and access to intellectual property are assured. The substrate itself will be supplied to NPA by the Australian company, Securency International, and the notes will be printed in Canada by two private sector security printers, Canadian Bank Note Company, Limited and BA International Inc., both based in Ottawa"

Dumped... quite literally! According to the Bank of Canada, worn out banknotes are put into landfill: "At the time of the study, the Bank of Canada had not chosen a specific end-of-life scenario for polymer bank notes. So, for the sake of modeling, the end-of-life treatment currently in use (landfill) for our cotton-based paper notes was assumed."

I don't suppose anyone happens to know where? :)

Does throwing insults somehow might you right?

You (and the mods who rated your comment "insightful") would do well to take an objective look at the facts here. If you'd bothered to RTFA, you'd realise that this is an apples to oranges comparison. The C++ code was optimised far beyond the Java code:

"E. Java Tunings: Jeremy Manson brought the performance of Java on par with the original C++ version. This version is kept in the java_pro directory. Note that Jeremy deliberately refused to optimize the code further, many of the C++ optimizations would apply to the Java version as well."

So while C++ might well be faster than Java, this article doesn't demonstrate that.

Let's not start a pissing match

This reminds me of a discussion I once had with an editor for two fairly large "sister" websites (that shall remain nameless), one for Java and one for .NET. Whenever an article was posted on the Java site it would attract 50-100 comments whereas articles on the .NET site would be lucky to get 10 comments on a good day. I questioned the editor about this, asking if the .NET site was attracting less visitors. He assured me that the traffic was in fact comparable but, for whatever reason, the .NET community was just far less active in the comments.

Of course whether this was due to the open source nature of Java attracting a more 'community' feel due to a host of other reasons is open to debate. But assuming the editor was honest about the numbers though (I have no reason to doubt him) it does demonstrate that trying to measure the effectiveness of a website shouldn't be solely based on the participation rates.

Personally I never post anything to twitter, I only use it as an information source by following various companies and people of interest. I find this very useful and I'm sure there's millions more who think likewise.