And there's the biggest reason why the DISboards meets don't get very active. And the biggest reason why such links aren't allowed any longer.
Our first cruise we had a huge DISboards group. All things related to group activities/discussion took place on DISboards. There was also a pretty large group on another site. All discussions there were individual, private talks (how's the family? where in Timbuktu are you located? We got our luggage at XX store... and so on).
But that's not the way it works now. Too many people raiding early DISboards meet threads and directing people to other sites.