As a shareware developer, I noticed your observation with interest, and appreciate your frankness that's combined with support of shareware development.
I don't think IZL is dead at all. Frequently, you see a s lot of activity when something new comes out. Then, things calm down, as users begin to use the new stuff in their daily work. As the initial excitement wears off, the real payoff for the users materializes. I think that's what we're seeing with IZL.
People may well be too busy using IZL to also spend time commenting on it.
There's consolation in this also for shareware developers. Sometimes, I get a wave of comments from users three years after the initial release, perhaps after two totally quiet years. To me, this indicates that excitement turns to real use and eventually to new excitement based on experience with the utility.
In my mind, IZL is still the one of the greatest GEOS tools and of immense practical use. If I weren't developing with the software development kit, I'd be using IZL for all my needs.
Clemens