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With the rising popularity of social media such as Facebook, Twitter, Instagram and many more, sentiment classification for social media has become a hot research topic. There were many research studies conducted on Twitter as it is one of the most widely used social media. Previous studies have approached the problem as a tweet-level classification task where each tweet is classified as positive, negative or neutral. However, getting an overall sentiment might not be useful to a business organizations which are using Twitter for monitoring consumer opinion of their products/services. Instead, it is more useful to determine specifically which tweets where users are happy or unhappy about. This paper proposes the discovery of Twitter user level interestingness based on relationships such as retweets, reply-mentions and pure-mentions using Google's PageRank algorithm. We conducted experiments and compared the results with hard-marked results by seven annotators.