People participate at other forums because of the openness of member sponsored forums, and the amount of activity that goes on. One cigar forum I frequent averages 25,000 hits a day and 800 new posts. If you spend an hour at that on-line forum, you're certain to read some new posts. And, of course, the trade board is very active.
The CBid cigar forum has some very slow days. One day this past week there were less than 25 new posts over a several hour period. I didn't tabulate the miscellaneous forum, so it may have had more activity.