As Brian can attest by the cold shoulder he's received at games, these boards are monitored pretty closely by the athletic program. I'm sure they are savvy enough to realize when somebody is writing with passion or if they are just tagging along as part of some message board campaign (or a combination of the two).
This is why I would suggest those who are inclined to speak their mind to do so by following P49's lead. Introduce yourself, tell him when you graduated, mention how long you've been a season-ticket holder and donor, and detail why you are upset with the direction of the program.
You're not going to be taken seriously if you resort to the sophomoric name-calling seen here (Bozo, Blewitt, etc.). P49 might not have gotten as long of a response as he wanted, but I assure you it's longer than what some people are getting.