Here's a little story that was bound to happen.
It's about a woman getting fired over comments she made on facebook about her boss (read it below). 

Granted, this is a two-way street - the basics being that if any negative comments, opinions, ect, are made about one's superior, should WHERE they are made be more relevant to a dismissal or not? 

This is what the article, in depth, offers :
-You bitch about your boss on facebook, and these moronic saps of shit actually have MANAGERS in their friends list.  You get fired for being an asshole and not liking your job and orders. 
-You bitch to your best friend at a restaurant, but a couple of tables away, the boss's brother overhears your conversation and reports it like a fucking squeal.  You get fired for being an asshole and not liking your job and orders.

The debate, at least in my opinion, is this :  What the fuck CAN you say?  Naturally, this just shotguns the "free speech" bullshit (or is it, in this case?) and exempts you from being fired.  However, fortunately (because free speech is abused so fuckin' much), we get to see that you really CAN'T say anything you want and get away with it. 

If you're complaning and making threats (even when they're not specifically aiming at someone), and others on a global scale, including potential clients, it damages the reputation of the establishment that has hired you. 
If you're clearly not happy, why don't you just man up and say it to your boss's face?  At least outside of work!  That way, you won't get fired necessarily, because it becomes a private matter out of the professional perimeter. 

It's increasingly funny how many idiots are on facebook that do this while having their superior in their friends list!  Google that shit, you'll laugh your ass off and think twice next time you make friends at work!

And so, in summation, if you're going to bitch about work to your friends - do it on the fucking phone and let go of your virtual, cyberspace-where-you-are-god-and-we-are-ants world! 
Stop being such a narcissistic bastard such as this example :

"
Another thing is I think a lot of people use Facebook as a passive/aggressive tool. It goes like this: If I don’t have the nerve to criticize you to your face, then I’ll post some thinly veiled remark about you on Facebook. You’ll read it, get offended and say something back. Then, I can swear I wasn’t talking about you. You might eventually believe me, but the point has been made.
" 

Here's the original article:

http://www.techrepublic.com/blog/career/new-case-may-prevent-employees-from-getting-fired-over-derogatory-facebook-comments/2738?tag=nl.e101

Takeaway: A recent case in Connecticut has the National Labor Relations Board ruling that companies can’t fire employees for complaining about their boss on Facebook.

A National Labor Relations Board (NLRB) ruling suggests companies cannot fire employees for things like complaining about their boss on Facebook. This ruling was in regard to a recent case regarding an employee of American Medical Response (AMR) of Connecticut.  The case has yet to be fully adjudicated, however.

The employee posted a negative remark about her supervisor on her Facebook page, a remark that drew supportive responses from co-workers. AMR said the postings violated its Internet policies, but an NLRB investigation ruled the postings constituted “protected concerted activity” (activity for the mutual aid and protection of employees, like discussions about wages or working conditions). The company is saying that derogatory remarks about a supervisor do not constitute concerted activity.

The issue at hand was that the company’s Internet posting policy was too broad. Legal experts are recommending that companies who don’t want to be in this same boat should have wording that specifies disciplinary action if the postings related to the company are discriminatory, abusive, insulting, or false. This will be an interesting case to watch.

We all have strong feelings about our freedom to say what we want. No one wants to live in a society where you can’t say anything for fear of repercussions. In this woman’s mind, she was sharing a thought the same way she would have if she’d been having a conversation at a restaurant with a friend. What if that restaurant conversation were overheard by someone at the next table who happened to be the brother of her boss? Could she still have been fired?

Another thing is I think a lot of people use Facebook as a passive/aggressive tool. It goes like this: If I don’t have the nerve to criticize you to your face, then I’ll post some thinly veiled remark about you on Facebook. You’ll read it, get offended and say something back. Then, I can swear I wasn’t talking about you. You might eventually believe me, but the point has been made. (No, I’ve never done this but I’ve seen some crazy stuff just by following a thread on friends of friends Facebook pages.)

The other thing is if this case is upheld and she gets her job back and she is free to snipe at the boss all she wants, what kind of atmosphere can she expect to go back into? I don’t know many people who could read criticism about themselves and then not hold some kind of bad feelings toward the person who wrote it. (It’s like in all those courtroom dramas where an objection is sustained and the judge instructs the jury to disregard a statement. I never understood that. You can’t unsee or unhear something.)

I’m sure this is the first of many cases involving social media that we’re going to see.