What exactly is RESTful programming?

Question

What exactly is RESTful programming?

Answer 1

It's programming where the architecture of your system fits the REST style laid out by Roy Fielding in his thesis. Since this is the architectural style that describes the web (more or less), lots of people are interested in it.

Bonus answer: No. Unless you're studying software architecture as an academic or designing web services, there's really no reason to have heard the term.