I'm a Baby Boomer, but I don't know why we would want a special board. Don't think I would frequent it.
As far as Disney goes, I don't see how a special BB for Baby Boomers would serve any need/purpose different from what the other DIS Boards already do. JMHO. YMMV.
We did have an Adults/Seniors Board. It was later combined with the Solos Board and is still available as the <a href="http://www.disboards.com/forumdisplay.php?s=&daysprune=30&f=54">Adults and Solos Board.</a>