All of these gloom-and-doom stories omit a crucial item.
If (and admittedly it’s a big if) you have set your privacy controls properly then your status, posts, etc. should be visible only to people on your friends list i.e. those you have approved to see such material.
If you have ‘friends’ who are in a position to sack you for anything you post (i.e. the boss or a company snitch) then why are they on the list in the first place? And if you have ‘friends’ who are revealing or forwarding your posts then why are they on the list?
The point is that offended companies or bosses usually need help to discover anything controversial.
As for companies’ social media policies: computer-use policies have been in place for a long time which makes social media policies redundant. Therefore, social media policies sound like a desperate attempt to control the high-tech grapevine - the same grapevine that has existed in low-tech form in offices/cubicles, around coffee urns, water coolers, at lunch and in bars for decades. In other words, gossip and criticism have not changed but the medium has.
>>>If you have ‘friends’ who are in a position to sack you for anything you post (i.e. the boss or a company snitch) then why are they on the list in the first place? And if you have ‘friends’ who are revealing or forwarding your posts then why are they on the list?<<<
Bingo!