Yahoo! Message Boards website
Effective April 1, 2013, the Yahoo! Message Boards website will shut down. Our message boards on individual properties (like Yahoo! Finance and Yahoo! Fantasy Sports) will remain active. We also encourage you to ask and answer questions on Yahoo! Answers, and discuss issues in the comments section on Yahoo! News.
Source
They sure were nothing to write home about but yet again we are seeing a major remote hosted message board system closed. Yahoo! do run their own advertising and have some 18 years of experience both in running message boards and advertising.
The message boards that remain did undergo somewhat of a revamp a few months ago. It makes little difference to me because I still find them tedious and unintuitive.
Yahoo Groups still remain ... at least for the time being.
If I look at Alexa stats for a selection of the larger remote hosted message boards, I see the normal seasonal dip, with no real rise or change. Where did all these people go?