This is pretty amusing. With thanks to Dan Stoddart on G+ for pointing it out.
Calvinism must be one of the most overused and abused terms going around in church circles. Much of what I say below I really mean, but it is rather tongue-in-cheek. Also, the way I box people into categories is very fluid, as I will explain later. Finally, I should also apologise to anyone who goes by the name Schmalvin; any confusion is completely unintended.
There are quite a number of streams of Calvinism. Each of the groups I describe below all locate themselves in the theological heritage of the French Protestant reformer, John Calvin. It is very confusing. I hope this helps.
You have the New Calvinists: John Piper is like the grandfather, Mark Driscoll, Matt Chandler and co. are the hipsters who tow the line behind him and a few other grandfather figures. They are the world’s biggest fans of the TULIP acronym. You may have heard the phrase “5 Point Calvinism” thrown around. Most of these people say they are Calvinists, and then you usually discover that they are “4 points Calvinists,” or “4-and-a-half-point Calvinists.” John Piper is a 17 point Calvinist, I think. I suppose that the MacArthur-peddling boys at Team Pyro would fit into this category as well. They tend to be Baptists. Their books get endorsed by D. A. Carson, J. I. Packer and Albert Mohler.
And then the rest. Oh, and anyone who endorses anything by Mark Driscoll is guilty of participating in heretical perversion of the faith, just like him.