In some cases, communicating more often can even push long-distance couples apart, Guldner says.

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"Information technology has definitely led people to believe that long-distance relationships will work more than in the past, " says Guldner.

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"Technological communication can interfere with the separate worlds that people are trying to maintain, " says Guldner, who spent four months as an emergency physician in Iraq.

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And one driver of that trend, says Gregory Guldner, director of the Center for the Study of Long Distance Relationships, is the perception that technology reduces the emotional separation of distance.

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But while innovations like e-mail, video chatting, instant messaging, Twitter and Second Life have increased the volume of Internet chatter, they haven't necessarily made long-distance relationships any more successful, Guldner says.

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