[zem]

i think another reason both facebook and g+ are in decline is that they're insisting on the whole "our way or the highway" approach - g+'s real names crap, and facebook's relentless publicisation of every move you make, are unpopular with tons of people, and even if those people reluctantly stay on because that's where all their friends are (in facebook's case, at least - g+ threw away any chance at stickiness by being high-handed before people were hooked), their engagement with the platform is diminished.