NationStates Jolt Archive
Jennifer Government (book, movie)
Political freedoms related to economy?
Does the amount of political freedom your country has have any effect on your economy? (both level on nationstates and on various other websites which track your nations economy)
The Most Glorious Hack
Can't speak for the calculators. You'd have to ask their programmers.
As for NS, yes and no. As issues change your stats, and most issues change multiple stats...