Hello, hello! - Addressing messages

"WHAT?!"
"What up?"
"What's happ'nin?"
"I'm sorry she's dead. This is her son..." (Kurt Hummel, Glee - Hello 2010)


From the English Language @ SFX Blog:

Dear blog, cheers xxx

Hey...
          ...Hi...
                     ...Yo...
                                 ...Wassup...
                                                   ...Wagwan...
                                                                     ...Hello...
                                                                                   ...Dear ...

Which is the right one to use in an email? This BBC News magazine piece about the correct way to address the recipient of an email is a really good read.

I've always been stuck somewhere between Hi for people I know and Dear for people I don't, but it feels really weird to me to type "Dear such and such" in an email. And while I like hey as a greeting, I feel too old to use it myself.

It's all part of a shift away from purely written forms of communication into the less regulated territories of blended modes, where the "rules", as much as there are ever rules, become less clearly defined.

And as for signing off an email, I've nearly always used cheers in private emails, thanks in more formal ones, but then cheers is described in less than glowing terms by Jean Broke-Smith who says "What is 'cheers'? Clinking a glass? It's an irrelevant word."

Cheers for that.

Source: http://englishlangsfx.blogspot.com/2011/01/dear-blog-cheers-xxx.html