Task: Evaluate the tweet for emotional cues and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that indicate the tweeter's state of mind.
Tweet: @GoPro your UX online is appalling! No clear save button, not being able to use any generic TLD's #unhappy
This tweet contains emotions: 
anger, disgust, sadness