I flag pretty much everything that even remotely smacks of politics, and most economics, no matter which side it comes from or how much I agree with it.
I just enjoy watching the double-standards people employ. For example, in this discussion I'd love to see somebody bring up the point that passenger rail in the U.S. is a political idea and not a practical business idea -- take a look at Amtrak pricing. But by actually diving into the business side of the article, they'd call the resulting discussion political!
I think "political" just means "stuff I don't agree with that has some sort of tangential relation to politics"