You can initiate a post from two different pages (maybe more):
From, pressing "post message" works.
From a particular forum, e.g.
pressing "post message" gives the message shown below.

Stefaan Nachtergaele has recently ugraded its software. Every effort has been made to allow existing bookmarked links to pages within the site to continue operating. You are seeing this page because we were unable to translate your old-style bookmarked link to the new site (or, because there was a typo in the link URL you enterred into your browser's address field). We apologize for any inconvenience.

The invalid URL was: