This is the first post that I remember on DBForums regarding HyperSQL. Other than version 1.8 being part of OpenOffice, I can't remember having seem a post about HyperSQL anywhere.
Every so often I see a post or two about a database platform that isn't represented here at DBForums. If there is enough interest (that would be about two or three posts per week in actual conversations instead of just "ads" like your post, two or three different posters, spread over a month) I'd be willing to consider adding a new forum for almost any database related topic/product/etc.
-PatP