Originally Posted by cooker
If a rider is putting themself and others at obvious risk by riding at reckless speed between parked cars and store doorways, any of us can express the opinion that he shouldn't be riding.
I agree, anyone can express any opinion at all, regardless of knowledge of the subject, or how biased, counterproductive, or baseless the opinion may be. If the posted opinion is meant to be persuasive for other than emotional reasons, or not considered just an emotional rant, the opinion holder should be willing to defend or substantiate the reasons for the "opinion."