Okay, <rant> again.
I challenge the community to the following test:
Somebody should write a simple bit of code that graphs the number of posts on a week-by-week basis for all OpenACS.org members. I'd bet you will see a significant drop in the number of posts correlated with the date that the new bboard interface went online. Worse, I bet you will see a strong correlation with particular users who dropped out of the conversation entirely.
</rant>