Task: Determine the emotional state reflected in the tweet, categorizing it as 'neutral or no emotion' or as one or more of the specific emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best characterize the emotional tone.
Tweet: Your most unhappy customers are your greatest source of learning Bill Gates, Microsoft co-founder #startup #entrepreneurship #delicious
This tweet contains emotions: 