http://www.binderplanet.com/forums/index.php is working.
binderplanet is the replacement for Binder Bulletin.
The original Binder Bulletin was a paid membership system, with commercial advertising to increase the revenues. IE, the site was a "for profit" venture.
When OldIHC broke away from our roots there, the first thing I decided to do was to keep the site free to the public. Advertising and donations are what keeps us going. No profit.
BB was purchased by scoutparts.com, and after which it disintegrated. The orignal Binder Bulletin still is still a website but it is under siege by hackers and spammers.
Most of the moderators from BB, went out on their own to create Binder Planet as a free forum similar to OldIHC. My head has been buried in the sand too long to stay up with all the news. Cutting this short, the link above is valid.