I am always annoyed by etherdelta's user interface. It is hard to use usually in mobile device and hard to scroll down especially when buying or selling. Unlike other trading sites have good UI. I can't stop using etherdelta because most of my tokens are only tradable in their slow site.
It really lags and I already have bad experience trading there because its sites does not response that quick. I sold my altcoin with a very low value because I supposed to sell my token with thousand satoshi but it was sold with hundred satoshi only. I had put the right value to sell my token but it did lag and the other digit did not register. It was too late as I saw my token already sold in an instant.