What is considered confidential?

Is employee relationship and work place discrimination considered confidential? If the person is no more with the company and signed a document saying he/she can’t use confidential information to damage the reputation of the company, can that person talk about the company issues like discrimination and unfair treatment in a public forum or a blog? Sample terms: This is to certify that I do not have in my possession, nor have I failed to return, any devices, records, data, notes, reports, proposals, lists, correspondence, specifications, drawings, blueprints, sketches, laboratory notebooks, flow charts, materials, equipment, other documents or property, or copies or reproductions of any aforementioned items belonging to XXX its subsidiaries, affiliates, successors or assigns (collectively, the "Company"). I further certify that I have complied with all the terms of the Company's Confidential Information and Invention Assignment Agreement signed by me, including the reporting of any Inventions (as defined therein), conceived or made by me (solely or jointly with others) covered by that agreement, and I acknowledge my continuing obligations under that agreement. I further agree that, in compliance with the Confidential Information and Invention Assignment Agreement, I will preserve as confidential all trade secrets, confidential knowledge, data or other proprietary information relating to products, processes, know-how, designs, formulas, developmental or experimental work, computer programs, data bases, other original works of authorship, customer lists, business plans, financial information or other subject matter pertaining to any business of the Company or any of its employees, clients, consultants or licensees. I further agree that for twelve (12) months from the date of this Certification, I shall not either directly or indirectly solicit, induce, recruit or encourage any of the Company's employees or consultants to terminate their relationship with the Company, or attempt to solicit, induce, recruit, encourage or take away employees or consultants of the Company, either for myself or for any other person or entity. Further, I agree that for twelve (12) months from the date of this Certification, I shall not use any Confidential Information of the Company to negatively influence any of the Company's clients or customers from purchasing Company products or services or to solicit or influence or attempt to influence any client, customer or other person either directly or indirectly, to direct any purchase of products and/or services to any person, firm, corporation, institution or other entity in competition with the business of the Company.