Way back in 2006 I had been using Crimson Editor for quite some time and with its apparent lack of development by Ingyu Kang I got really excited by the promise of the development Emerald Editor.
At that time, Emerald Editor, was going to be the natural successor to Crimson Editor, so I offered my services as a Beta Tester for new all singing and all dancing Emerald Editor.
As we know, Ingyu Kang kindly released the source code for Crimson Editor and some of the 'energy' that would have gone into developing Emerald Editor was diverted to updating Crimson Editor. After which everything went quiet and not much seemed to happen to either editor.
I check the forum at least once a week and over the years the numbers of postings have dropped off. So, my guess is that some of the people who signed up to the forum did so because of their interest (like me) with either one or both of the editors.
But as nothing much has seemed to be happening in the way of significant code releases, they probably just drifted away - I realise that behind the scene some people have working their little socks off on the project.
Anyway, that's what I think...
All the best,Emerald Fox