This is also where I receive value from facebook; I grew up in Saudi Arabia and all my childhood friends scattered around the globe. There is no other tool like facebook that lets me both maintain meaningful contact with friends & find undiscovered friends spanning large geographies. Relatedly, I've always found facebook's geography-based search tools (friends/posts & content in a city/region)have left much to be desired.

I agree with the article author's opinion that Facebook IS growing less useful for me. As Graue said in above post, though, this really only applies to me and my reactions to MY OWN social circle.