While I wouldn't use Washington Post as a reliable news source for Bitcoin, most of those answers were pretty spot on.
I know right? Times are changing, and we're starting to see major news websites actually doing their homework on Bitcoin.
But, so I won't be completely off-topic, I'll also add a question that a lot of newbies might have, as I noticed some tend to confuse the two:
What is the difference between nodes and miners?