The social networking site Facebook puts its users abreast of the activities of their contacts, but also can be a poison for relationships and, as revealed in a recent study, is increasing jealousy and tensions between their supporters.

According to the department of psychology at the Canadian University of Guelph, Facebook may lead to serious situations of jealousy with his continuous flow of information about what we do, who are friends and what photos appear.

After all, who would not ever wonder why a former boyfriend or girlfriend is among contacts of your partner? Or who is that blond or blond-appearing in a very friendly attitude in the photos of our husband or our wife?

"Facebook allows access to information that would otherwise not agree and this information often lacks context," he told Efe Amy Muise, one of the managers of the study at the University of Guelph.

The social network "is exposing more people to triggers of jealousy," he added.

The study, conducted among several hundred students of which a third were women, showed that Facebook can lure us into a spiral of distrust.

Thus, a banal comment on the profile of our partner made by a contact of the opposite sex can lead to suspicion and closely monitor their Facebook page ... only to find more information feel even more suspicious and jealous.

"Feelings of insecurity about your partner may cause behaviors inquisitive and Facebook is easy access to this information," said Muise.

In many cases, the "spy" can not even control what appears on their profile or can not quickly enough.

If an ex-boyfriend writes a comment on our wall or label us a photo, it may take some time before we realize it ... enough for your partner first and see what a fight erupts.

Muise says that psychologists and sociologists are beginning to understand how social networks affect personal relationships and cites the case of a woman who discovered that her boyfriend had broken up with her because she changed her Facebook status to "single."

After all, the Internet social networks are a relatively new phenomenon that still somehow we are adjusting.

Although today is already more than 250 million members, Facebook, for example, was until just three years ago a business network confined to the U.S. academic community.

Today, almost everyone we know are members of the network, including current and past our spouses, our bosses and coworkers and sometimes even our parents.

And so we continue to belong to the club at all costs, even if some masochism in seeing how our virtual cake groom sends his ex for his birthday.

"Facebook has become pervasive, especially among the age group of our study," said Muise. "Therefore, having a presence on the network can be an important aspect of our social life"

"The Facebook environment normalizes share information about us and access information from others, including our partners. And do not belong to the group may seem socially very risky," he added.

For many, however, the popular social networking goes too far.

A group of five Facebook users in California this month filed a lawsuit against the social networking site claiming it violates privacy laws of this state to disseminate private information about its users without properly informing them of this.

It is not the first time the company, based in Silicon Valley is facing complaints or criticism from their users by how it handles private data, and earlier this year amended its rules of use to give users more control over their privacy.

The recent lawsuit has, according to experts, unlikely to succeed with success. Yes, Facebook disseminates information private, they say, but is not precisely what we wanted when we became members?