If online life met real life

“I wrote on your wall”
“I am following you on Twitter”
“I have tagged you in my photo album”

These are just a few example of the most common actions in our everyday (online) life. But what would happen if we started acting like this in our real life? How would people react?

I think this video is a really funny example:

Also, how would it be a conversation if instant messaging were real?
How would we “translate” all those LOLs, ROTFLs and funny faces?

Someone has already tried to explain it: