frac, Yahoo has redesigned Yahoo Finance. If you are viewing it from a desktop, you cannot easily access these message boards. If you navigated to Yahoo Finance with a desktop pc and then did a search for KWKAQ you would see a page with tabs for "Summary", "Conversations", "Statistics", etc. What are termed "Conversations" constitute the replacement for the message boards.
For some unknown reason, the change has not been made when viewing from a mobile browser. I would bet that you are accessing this board with either a tablet or a mobile phone. There are browser extensions which allow the browser to lie about what platform/device is reported to a web server, and hence one can access these message boards using a desktop browser.
Who knows how long Yahoo will make the old message boards available from mobile devices. The new Yahoo Finance and especially the "Conversations" are generally getting scathing reviews.