New era in social media?

I can't help but think about the current change in social media. Long gone are the days of sitting in front of a computer scrolling through websites such as MySpace and Facebook (unless you're over 65, in which case you have time to do that). Everything has changed from sitting and actually reading status updates or looking through an entire album of photos, to more of a quick scroll viewing process.
I'll call this the "scroll-view" although I can assume I didn't make that up. When social media websites first arrived, everyone wanted a place to socialize with everyone. Or so they thought...but now it seems as the more people join Facebook, the less active everyone is.
Many people I know prefer Twitter because they say it's less invasive. You don't have to have your full name or any photos and you can post freely about anything. But with Facebook it's really like a profile into your life, so it seems as though many people use it less and less.
As well, with Twitter, you're limited to 150 words, which eliminates those annoying "OH MY GOD MY LIFE IS SO BAD, I JUST HAD THE WORST DAY EVER...First I woke up and fell out of the bed, stubbed my toe, then slipped in the shower...." posts that no one really cares about.
Not only that, Instagram offers the whole scroll-view process as well. You can only upload one photo at a time, which sort of limits you to some extent. I don't mean to say that Facebook isn't "scroll-view" but something about complete and absolute freedom seems to bore people. Maybe we need a limit on how many photos we post or how long our updates are.
Along with the whole scroll-view process comes the tablet. This revolutionized the way we consume content. Not to mention, apps offer many more unique ways to stay in touch with friends rather than just writing on someone's Facebook wall.
So although we want social media, we also want privacy and exclusivity. When Facebook was college exclusive, so many more of my friends used it, and now it's like the long lost shirt you loved at one point, but kind of forgot about.