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New research is adding a Twittery flavor to the old adage "birds of a feather flock together," because it suggests happy twitterers tend to aggregate. Does this have implications for PR-related tweeters? In a paper titled "Happiness is assortative in online social networks," University of Indiana researcher Johan Bollen and other authors conclude that "Social networks tend to disproportionally favor connections between individuals with either similar or dissimilar characteristics.

Dr. Laura Schlessinger talks candidly about grappling with the emotional turmoil of betrayal in her latest book, “Surviving a Shark Attack (On Land).” When should we forgive and forget? How do we find peace with an urge for revenge