Well worth reading for kicks, and reads more like a primer on how to make yourself a nuisance to local courts.
tl;dr You have to fill out some documents, notarize them, have state and federal judges sign them, and refuse any case you're involved in to be heard by magistrates in lower courts. In this way you'll be put on the "list" for diplomatic immunity although you are (presumably) not a diplomat. They even sell diplomatic corps car tags.
The legitimacy of the article is undermined by the fact that the author often spells "you" as "ya".