At its best, Quora can be an interesting window into parts of the world you might have little to no direct experience with. Some of the most highly-voted answers are from prisoners, police officers, actors, CEOs, and other people you might not interact with day-to-day, and I've found those answers to be both entertaining and useful for enriching my model of the world.

I also occasionally use Quora as a way to test exposition strategies. The standard for what constitutes an accessible explanation (as measured by number of votes) is relatively high, and I like the challenge of trying to explain mathematics on Quora in as accessible a way as I can. Feedback on my attempts to do this is relatively fast and has informed how I explain mathematics in general.

Most of the time, though, I find Quora a waste of time. I have not found a way to effectively filter its feed so that I get mostly high-quality content. It seems like there is relatively little effort made to quality control questions (as opposed to answers).