D ick,
On the face of it, it sounds like a good idea, however a previous Moderator, Philip Hanson had strong views regarding this, and I agree with him.
There's two sides to every story and when someone makes a complaint about a company; it may not always be justified and ligitamate, and the company may not be here to defend itself.
If you have a complaint, you should make it to the company.
However, praise is different.
Soap National, Peter Fogwill and a few others always seem to get good reports on this site and my dealings with both companies back this up.
So praise in public, but complain direct to the supplier.