I’ve been a real bugger sometimes and asked people to explain what RSS feeds are in an interview. Not to see if they necessarily know or not. But to see how they respond to answering a tricky, techy question.
Now if someone’s read this article they’d have pretty much the perfect answer: Back in skinny jeans: How to explain RSS the Oprah way
The most simple explanation of RSS I’ve seen. Deservedly a very popular link.