It would appear that something has changed considerably in the Spam Filter for the new site. I have now had two totally innocuous comments diverted because they contained "words associated with Spam". The first was something I attempted to post at the beginning of the week, and it has still not showed up on the site. This used to happen most often with things that contained a lot of links, but neither of these comments did.
It might be useful to know at least in general terms what triggers the spam filter, so we can try to avoid it with our posts and comments. Otherwise all that is going to happen is that people are going to get tired of writing comments and seeing them disappear forever, and they will stop participating. That would be sad.