Sure you can, see the rules:
The Rules wrote:
1. While debating and discussion is fine, we will not tolerate rudeness, insulting posts, personal attacks or purposeless inflammatory posts. Our decision is final in these matters.
10. While we are quite happy to have constructive comparative conversations regarding products, we will not tolerate blatant adverts or and slanderous threads. Please refrain from blatant bashing of other organisations.
If you have problems with a local supplier, who will most probably be a contributor on here, then you have full access under the trade practices and consumer affairs acts to be provided a replacement or a refund in full. If they do not comply, then you have access through the consumer affairs department to make a complaint and have a review undertaken by a neutral arbitrator. Its all stacked in your favour if you are honest in your intent and you use the avenues open to you.
If you get lazy and find you need to slander a business person online, and they are all members here, then you attack them in a manner which is indefensible and probably one sided at best. We are all part of a small community, we probably don't number in the thousands, and we all have friends and family on here as well.
Constructive discussions work just fine. Kmart won't sue you for complaining about the quality of a pair of shorts. The problem is when it gets personal and people start making slander. Recently a supplier solved an issue of differential gears chewing out at no financial benefit to himself, and having no connection to the problem in the first place.
You don't need to look hard on here to find problems which could have been solved so easily in the first instance had some common sense been applied.