your quite right, you do have a right to say what you want and when you want
the only trouble is when people start talking about places of work, start to point fingers and make comments that can land the web site in trouble.
if the information is correct, which andy was asking about, then as seen above, the post and relevant information is left alone, if slanderous then the post may be removed
this is so the site can remain running for all of us to use and not just to try and hack people off