I was looking up caches this morning near Grand Lake Stream and noticed a strange log, so I also took a look at "ForestDefenders" blog. I agree NativeMainer, it's a good idea to be vigilant about people like this~ so much anger for an activity that they don't understand, and haven't taken the time to research. It's interesting that his blog is set up so that no one has the ability to comment at all. He wants to have that "all mighty, I'm absolutely right about this" atmosphere to post in, because allowing others to post might inspire a reader to research on their own.
As far as not discussing it because by doing so we fall into their "trap".... knowledge is power. The more knowledgeable cachers are about this type of activity the better prepared we can be. Not just regarding what might be on an online log, or at a cache site, but also more thoughtful about what we can say in response to lies about geocaching and letterboxing. It's unlikely someone like this can make a huge impact, but we don't want him to make caching uncomfortable for people either. Creating awareness about trolls like this is a benefit.
Things like this always take me back to the "premium" vs "regular" caches argument though... =(