From a different perspective: As a car dealer if I am giving general automotive advice I do not disclose I'm a car dealer. I want the information I share to be evaluated on its own merit and not be tainted because I am a dealer. Even in these posts, some have suggested that dealers should be banned. To me that's ludicrous. I am a big boy and can parse advice whether from a dealer or an avid audiophile.
However, if I'm discussing brands I represent I will start with "As a car dealer..."
However, if I'm discussing brands I represent I will start with "As a car dealer..."