As much as I like this usecase - the story does strike me as a bit of an exaggeration.
I've no particular insight into what's going on in Iran - but while there have been a few nodes popping up in Iran over the past couple of weeks as evidenced on:
http://blockchain.info/nodes-globe?series=48hrs... it doesn't look like much.
Perhaps they're using things like the blockchain.info/wallet rather than full nodes, but I'd like to see some evidence that there are even as many as 100 people using it there.
I worry also that this story brings attention to Bitcoin as a 'sanction buster'... when it's barely got off the ground as such and is more easily squashed.
edit: but on the plus side.. this sort of attention will probably inspire more interest amongs Iranians abroad, and then their families/friends back in Iran.