Make others aware of unacceptable treatment you received from health service providers, be it private or public or local government or council departments.
Help up fight dishonesty and lack of customer service by posting your opinion about suppliers, service providers and companies.
Point out difficulties you might have experienced while using online services like internet shops, nuisance emails, spamming websites, malicious software.
Reveal the truth about the mobile phone deals and unfair charges applied.
If you decide to post a business review you allow other customers to learn by your experience and make their decission about dealing with this company more careful.
Share your customer reviews with others to promote good and reliable companies and discard those who should not be on the market.
Add your customer reports on public transport.
Review night clubs you have or have not had a good time in. Post a comment on good food spots, restaurants, cafes, etc.
Customer complaints are a powerful tool and ususally result in a response. This can only work miracles if used by the customer service managers in order to improve the services provided.
Post a complaint or write a compliment about anything what happened to you while dealing with any company in the world.