Nothing lasts forever obviously, but difficult to take the article seriously with a blatant grammatical error in the first sentence. Facebook is deeper than most people realize. It is integrated and part of peoples lives. Google+ was supposed to be the new best thing and put Facebook out of business. I don't know of one person that opened a Google+ account that actively updates it or uses it, let alone less tech savvy people that will never leave facebook.
I use FB more often from my phone than I do from a "computer". The iPhone app has minor problems but overall it's a good-enough experience that approximates the www site. Worries that FB missed the mobile wave are unfounded.
That all depends on Facebook. Right now they have the people but no way to draw money from them. The typical box ads aren't going to work for Facebook; people on that site aren't looking to leave, they're at their destination. They can't charge their users because a wave of people would up and leave, which in turn would start the mass exodus of just about everyone. They could start selling user info but that would get them the worst PR imaginable and likely lawsuits.
They need to figure it out soon now that they are publicly traded.
yea you have a high number of kids on or joining the site. Remember myspace? It was all kids jumping into the cool social sceen. FB probably be around for some time but we all know our kids don't pay the bills they add to them.
FB pissed a large number of older adults with all there privacy issues and recent changes.
If you want to find out yourself do a survey of people you know by age group.
fb is deeply integrated into the web with like buttons and apps and has the critical world wide mass. so it will stay for a while. just like google does in search. since their handling of the situation is actually not that bad, users stay on the platform. on the financial side, income streams are weak and mobile will be no improvement at all. concerning the profit: yes they are publicly traded now. who cares? the founder including staff and some shady "early investors" did already benefit big time. they are not dependent on a financial success of the company. money was reallocated and some other people are losing. not unlike the yahoo or aol story for that matter.