I took all but a few bytecoin off Poloniex just days ago, and I couldn't take that off because they said they were having problems with that wallet. Overall, with everything happening in crypto lately I've come out okay, but lately what I've seen shouts out to me one resounding lesson:

YOUR KEYS; YOUR COIN! NOT YOUR KEYS; NOT YOUR COIN!

Keep driving home that point to newcomers with posts like these!