Mike Hearn has talked some on how you could use existing functionality in the bitcoin protocol to issue loans. Around 25:50 he talks about ripple + bitcoin which is a practical autonomous lending system. A little bit simpler than the smart property way which is pretty deep down in the protocol.
I hope to see something like alternativeto.net too, were you can link multiple items and compare facts about them. I realize this is what can be done with the tags.
It can be easier to see which programs are similar than coming up with a unique tag for them though.
NAIRU could be connected to this.
"...it was impossible for governments simultaneously to target both arbitrarily low unemployment and price stability, and that, therefore, it was government's role to seek a point on the trade-off between unemployment and inflation..."
http://www.youtube.com/watch?v=mD4L7xDNCmA&t=17m30s