Apparently spam bots have gotten smarter and can circumvent the Captcha systems that normally stop them.
Some of us who do have moderator / admin privileges do try to ban and stop them as we have time -- it just gets tedious when they keep coming. As a moderator, I can only delete one post at a time. Quintus can delete a group of posts from one user at a time, but the last time he did this, the system crashed and resulted in some junk data hanging around in the forum.
No, this site is not used as much as it used to be. As Quintus pointed out, we're moving toward a new forum at: http://forum.secretchronicles.de/forums
However, feature/bug requests are managed at: https://github.com/Secretchronicles/TSC/issues
The github tracker is the most active as far as discussions right now, but we are trying to ramp up our new forum. Hopefully, an artist can soon spruce up the new forum with images and/or a new style sheet, too.