Exactly. If it replaces anything, it's because it is more efficient at it. This is all anecdotal, I know...
Since Facebook, my email inbox is almost devoid of "RE:RE:FW:FW" broadcast messages.
I still get plenty of email from family and friends, but they are more selective in what they send. Things that are personal, or detailed, or very specific to me.
I still use my phone a lot, but spend less time telling people how great (or not) my weekend was. If they want to know, they can look. If they want details, they call and ask.
Since Facebook, my email inbox is almost devoid of "RE:RE:FW:FW" broadcast messages.
I still get plenty of email from family and friends, but they are more selective in what they send. Things that are personal, or detailed, or very specific to me.
I still use my phone a lot, but spend less time telling people how great (or not) my weekend was. If they want to know, they can look. If they want details, they call and ask.