Traders on here are generally a good bunch, and much quicker to respond to emails than if you contacted a trader off a forum - but then again its good to be seen to be punctual on here with so many watching. I have also gotten good deals in the past for trying new products in stock, the forum works great for that.
I have to agree with Rich though, comments should really be when they are in the extreme. So either you have some fundamental problems that others should be aware of, or, flip side a trader went way beyond the call of duty (say working through the night, giving up their bank holidays, getting something to a customer earlier than any of their SLAs state in an emergency etc) - I really don't see the point of endless pages of members saying that they bought something from a trader and it arrived, if anything they should be recommending the delivery company