Few Internet sensations can rival the viral success of Pinterest, which in recent months has catapulted to be the 59th most popular website in the world and the 16th most popular in the U.S., according to web traffic tracking company . That quick rise could suggest the issues it has faced are due to growing pains.

To its credit, Pinterest is making changes.

According to Alexa, Pinterest is particularly popular with young, educated white women who have incomes over $30,000.

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