Writing complaint letters to companies for free stuff, what are your thoughts?

I have heard of people doing just that - writing to companies looking for free stuff. Don't think that it's always a complaint either. Sometimes I believe people have given the company compliments in the hope of freebies. I know I did once return some well known tortilla chips to the company as both myself and my husband found them to be tasting strange and different from normal, so we were concerned as to whether there was anything really wrong with them. It was years ago, but pretty sure from memory they did send me some vouchers. If you feel that a product isn't as it should be and you have the time and feel so inclined, then yes - write and inform the company.

Never wrote but it's good to give feedback for products.

Customers have the right to complain if there's a problem with the service or products purchased. Complaining without valid reason just to get some freebies would be a different story - I don't think that's right...

Honelty, I think it´s wrong by the companies itself to practise such things coz in this way the company accepts that the product they have been selling defective products and to keep the customers calm and relaxed so that the reputation of the company is preserved. I´ve never come situation where i got free stuff from company, I eventually send the product back to the place where I got them from and demand for a refund and an exchange of the product.

I have never written any but then if it is done for the right reason it is okay

I've never written to companies. However, I've returned things to the store and received double the refund. Then the store notified the manufacturer who later sent free coupons worth far more than the item. *be well*