I don't see that as true- even tech savvy people seem to do it. I think it might have something to do with email sometimes being seen as a more formal type of o

I don't see that as true- even tech savvy people seem to do it. I think it might have something to do with email sometimes being seen as a more formal type of online communication, as opposed to instant messaging, or even perhaps less formal emails (there's a distinct difference, in my mind at least, between formal and informal emails; formal emails are written much like letters, whereas informal emails are more like instant messages or Facebook comments).