His nick on the forums is Black_Knight and he has been well known for his posts through the SEO community at all the major forums, but especially Cre8asite Forums. He first started contributing under Black_Knight in 1998. His Cre8asite profile was created pretty much the same day the forums went live. He has been with Cre8asite since before its inception. Ammon has posted almost 10,000 times, averaging almost 5 posts per day and making up almost 4% of all the posts in the forum, to-date.
I personally have covered many of his posts here.
The Cre8ative Flow blog has a bit more information.
Ammon's farewell post:
Being an Administrator of this community has been a wonderful experience over the years. I've (virtually) met so many interesting people. I've been able to be a part of something truly immense and spectacular. I've been able to be a small part in many people's lives here. I don't regret a second of it.
However, I do feel a need to take an indefinite break.
It is not an easy thing to walk away from such a great team. But it is not my way to allow the team to carry me either. So I am stepping down as an Admin rather than take this break leaving the team and community hanging.
I want to take this opportunity to say a big "thank you" to all the folks who make this community. To all those over the years who have been a part of this amazing place and its creative energy. It has been an amazing journey.
We will miss you dearly Ammon! Best of luck with your future endeavors!
Forum discussion at Cre8asite Forums.