Regarding moderators participating in threads, I’ve given this quite a bit of thought in the past and wanted to share my personal (not forum policy) thinking along these lines.
At first glance it does make complete sense not to have moderators participate in the discussion. It gives the appearance of balanced moderation, and does not give anyone any ammo to claim “bias!” when moderation occurs. It seems fair and reasonable.
However, upon further examination we need to consider a few other things.
Appearance of balance does not equal balance. As we all follow cycling closer than most fans we have long since become fans of one rider or another over the years. We have bias toward them. We understand the issues in cycling fairly deeply, and we understand the arguments on either side of an issue and have our opinions whether we express them or not. Would you prefer to know where our opinion lies or would you prefer not to know?
Most importantly, I have to ask what is moderation? Is it the handing out of infractions, bans, editing and deleting posts? Those are certainly tools of moderation. But the other, and potentially most powerful tool is to set the tone by our manner of discourse and how we deal with things when they come up. We can and should (in my opinion) be trying to set examples of how to opine, discuss or even argue in a respectful manner which engages forum members and diffuses rancor and abuse. If we were to participate as only the police of the community and not as members and do drive-by moderation I think we’d be less effective than we are now. When we participate on the forum you know us and we know you. We have engaged in discussion with you previously (in most cases) and that tempers our moderation. There are many times when a great long-time member has posted something completely out-of-bounds and because there is a relationship there I have tempered my reaction. I know this person is a good person and good poster and that matters to me in how I treat them. More often than not when moderating or sanctioning someone like this it turns out to be an opportunity for a betterment of the relationship and a better understanding between myself and the other member. For those members with whom we’ve had disagreements but those were handled with respect on both sides, we truly appreciate it and it really does matter. Thanks for that.
Beyond all that, there simply isn't any reward in doing moderation only. We came here because we were fans, and because we thought this was a great forum. I don't know that I'd do much moderation if I didn't participate, at that point it becomes work alone. Further, we can't really determine which threads are "contentious" as all threads can be and one man's contentious is another man's lively discussion.
I hope this adds to the understanding of what we do here.