Priceline is slowly creeping up behind rival online agency brand Expedia in the list of leading travel websites in the US during May 2013.
Market leader lost 0.1% market share between April and May this year as second placed Priceline added more than 0.5% to its own score.
The gap between the pair is now just over 2.5%.
Most popular travel websites in the US for May 2013:
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Destinations and Accommodation
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Travel search terms
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NB: Data couresy of Experian Hitwise