Basic steps are:
Post in the long narrow box under the chat box and submit.
You can also use the special features in the new window chat box lower left corner of box.
You might have to refresh for every page until they get it fixed.
You can also type a letter in the box and hit submit and then it will show up. You can still delete any post by hitting the x
If you have any question, please ask for help!
You could in the meanwhile use the Chat that is being linked to in the header. It's hosted on a seperate page under chat, so what you could do is have two tabs. One for the chat and one for browsing through the forum

