Follow up: what are some of your least favorite?

I'm looking mainly for altcoin exchanges. I can really only name 3 or 4, but please feel free to add to the list:

- Poloniex (updated 1/7/18: please read https://bitcointalk.org/index.php?topic=2687216)
- Bittrex
- cryptopia.nz
- c-cex

Updated List 7/4/18:

- Binance
- YoBit

BTC Exchanges

- Coinbase
- Bitfinex

DEXs

- WAVES
- Etherdelta