Recent offerings from Farecast and FareCompare help consumers determine the best time to book airline tickets. Travel social networking sites like Gusto.com let visitors share itineraries and trip information.

Capitalizing on the online video rage, travelervideos.com lets travelers upload vacation photos and videos and write their own travel blogs ? all of which can be shared with family, friends and other travelers.

All this activity comes as research from comScore shows that travel supplier Web sites are steadily taking share away from OTAs, due to the success of their lowest-price guarantees.

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