Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

What is the difference between “good debt” vs. “bad debt”?
None of the previous answers (which are all good) mention margin accounts (loans from your broker).  You may also have heard them described as "leverage".  It may seem odd to mention this rather narrow form of debt here, but it's important because overuse of leverage has played a large part in pretty much every financial crisis you can think of (including the most recent one).  As the Investopedia definitions indicate, leverage magnifies gains, but also magnifies losses. I consider margin/leverage to be "bad" debt.