How can someone telling the TRUTH about bad service be described as "irresponsible"? Maybe - in that instance - someone was mouthing off unjustifiably. Seems a weird stance to take otherwise.
No, I think any forum should be able to speak up about both good and bad service. As an example, take the recent remarks made in threads about a certain supplier of stainless steel exhausts whose products are going rusty. I say, if they've got anything about them, and nothing to hide, come on to the forum and state your case. But do they? do they b***ocks. So already we are witnessing sales going to competing suppliers. That's great, that's one of the prime reasons for being part of a forum - sharing knowledge.
If it means one thing, get yer facts right before mouthing off on here, and most of all, TAKE IT UP WITH THE SERVICE PROVIDER FIRST! Give them a fair chance to make amends.