In a world of go-go-go, mobile everything and social media people tend to speak (type) before they think. Dirty laundry gets aired out on major social media channels. Text messages get sent after a long night of raucous behavior. Crude images get uploaded that others don't want to see or will use against you later.
Before technology, some people simply lacked a filter that prevented them from over sharing personal business. I think as a society we got over it, told them to think before sharing and maybe enjoyed some of the drama that ensued after.
Now a days, technology has made sharing extremely easy and almost makes people feel like they have to share.