Texting is great example of cultural lag.
The technology came along that changed a major human behavior and we have not adapted rules for how to deal with it.  Younger people who grew up literally with the technology as it grew are good multi-taskers.  But, they have lost key abilities in emotional awareness.  Their ability to read facial expressions has actually been compromised.  And in skills tests their multi-tasking skills demonstrate that while they can do ten things at the same time they do none of them well.
This means missing key components of human communication.  Facial expression, body language and tone of voice are all lost on forums and in texting.  Those comprise nearly half of human communication.  They have many "friends" but few friends.  They spend all day talking to people on social networks but have no real social network and talk to very few people.
It cannot be changed now.  The question that remains to be answered is what will they do with it as an entire generation grows up - like Lindsey Lohan and Brittney Spears - in the public eye with little to no privacy and no ability to leave their mistakes behind.......