That irked me too but from a purely anecdotal standpoint, I believe the author makes a point when he describes Facebook from the perspective of someone in a relationship.
You get such a biased view into other people's lives (because people post happy things way more often than they discuss their real problems on their profiles/pictures) that it's easy to get overwhelmed with the greener-grass feeling.
Now I'm not saying it's a reason people get divorces (I won't believe that until I see some stats) but I do believe it has the power to amplify an already existing feeling of displease at your couple or significant other.
Thanks for the link, however I'll go ahead and bet that most of those Facebook divorces actually go down to a more important underlying problem than the use of the social network. I'd really like to know how many cases has Facebook been blame for where one spouse just happened to find out via Facebook the other was cheating.
This, the article does not explain clearly. Getting a divorce because you got back in touch with a high-school sweetheart then blaming Facebook for it is like blaming the bar where you hooked up with a drunk chick for ruining your relationship.
