Iran's current approach to internet censorship typically isn't subtle -- either you get unfettered access, or (more often) you don't see a site at all. However, the country's government is about to take a more measured approach to blocking online content it doesn't like. It's deploying "intelligent filtering" that tries to restrict only the material deemed "criminal or unethical," rather than cutting off an entire service. The smarter filter is only active on one social network (most likely Instagram) as part of a test phase, but it's expanding to more sites within the next six months. Ultimately, the nation wants to use this technology on "all networks."