When reading an article in the Huffington Post about how easy it is to register a church (as shown by John Oliver) I was wondering why the practice is not more widespread.
The American IRS does not take a position on religions so a minimal effort to check the marks would easily allow for tax benefits. I would guess that the more money is on the table, the more "organized" the organization could be (I am not talking about the philosophical aspect but the formal one, that is having all the processes in place so that an audit comes clean)).
I am from Europe where the financing of churches is more around taxing the believers, rather than having the church exempted from paying taxes so the usefulness of having a church is smaller (this is visible through the small number of recent churches, and when these arise it is rather a matter of dogma)). It seems however than in the US it is different.