I DON’T THINK THE GOVERNMENT IS GOING TO DO AWAY WITH THE $100 BILL ANYTIME SOON

I could be wrong, but despite a fair amount of discussion about it recently in some corners of the blogosphere, the people who are suggesting that the government should do away with the $100 are just a couple of non-authoritative policy gurus.  The idea is being suggested as a means to fight crime, but to some commentators it sounds like a way to limit consumers’ ability to avoid the impact of negative interest rates on bank deposits (instead of the bank paying you interest for holding your money, you would be paying the bank), should that state of affairs come to pass.
And no, this really doesn’t have anything to do with the talk a few years ago about Tide being used as currency.  That was definitely crime-related, i.e. the drug trade, because apparently in some places Tide is easy to steal and exchange for drugs.  Although I suppose if the government really did eliminate cash, a barter system with commodities like Tide, so as to avoid confiscatory taxes, could be the result.