I like the message board setup but they obviously have no marketing plan.>
Agree. I think it was started by some frustrated IV users. From an IT perspective, the site works very well and supports my iPad which IV does not. I seem to spend more and more time on my iPad these days so I'm going to continue to use IDB from that perspective. I'm heading off to Europe in a few weeks for a vacation where I will be iPad-only so I won't be able to post on IV. Its also not completely clear how well IDB will scale until the user community grows.
It appears that IV has fixed many of their technology issues and I expect that they will offer iPad support at some point.