When you start reading or hearing other club's fans regularly saying things like "always thought Brighton were a decent bunch but......" it's time to start worrying in my opinion.
Why ? I couldn't give a toss what other clubs fans think of us just as long as we're not seen as violent thugs. If Stoke, Norwich et al don't like what's being posted that's THEIR problem not ours. As someone else posted - you carry on worrying, the rest of us will continue to enjoy posting our opinions whether rival fans like them or not.