Writing a compliment or positive review can also promote companies which are taking care of their customers in an extraordinary way or simply when there is always someone to talk to, who is able to deal with your enquiry in a very professional manner.
Point out difficulties you might have experienced while using online services like internet shops, nuisance emails, spamming websites, malicious software.
Your opinion as a customer matters so please write as much as you can to prevent what has happened from happening again.
Share your opinions about so-called 'fair use policy' used by internet providers. Make a comments on what concerns you with regards to it.
If you an ebay user and want to let others know what happened to any transaction of yours post your extensive story with all details of the transaction. Eliminate untrustworthy ebay merchants by stating your point.
Make a funny comments about the operating system you use and in what shape your computer infrastructure is.
By writing your review you not only try to stop mistakes and bad attitude towards customers but also you raise your voice on the future of reviewed company.
Find more about a company you are planing to buy from or use for services and spend some moments on reading before making up your mind.
Make others aware of unacceptable treatment you received from health service providers, be it private or public or local government or council departments.
Always check rating of the company and read carefully all cases, either succesfully closed or those which are unsuccesful.