Facebook, relationship, ruin

Facebook brings the world together like no other — nearly 600 million members now congregate under the same social umbrella. But as it unites, can it also tear us apart? According to a 2010 survey by the American Academy of Matrimonial Lawyers, four out of five attorneys reported an increased number of divorce cases citing evidence of foul social network play, with Facebook named as the leading culprit.

It may seem apparent — so many people, so many temptations — but the reasons Facebook can ruin a relationship run much deeper. With help from Kimberly Moffit, a Toronto psychotherapist and relationship expert, MSN looks at why the world's most popular social network can be a psychological nightmare for couples.

* Video: Navigating the do's and don'ts of Facebook