Truthfully, I don't exactly remember how I found AGS, but I have a theory or two...
See, more than once I've gone looking for games engines, open-source or just game makers, whatever. Truth to tell, I wanted to make a Master of Orion clone because MoO3 sucked like the Mighty Hoover™, and MoO2, while still an amazing game, wasn't quite the experience I wanted.
So I was hoping, if nothing else, to find a simple scripting language with built-in graphics support (I've programmed before, but graphics manipulation was always way above my head for some reason. I figured if I were to find a graphics engine I could probably do the rest) and I probably ran across AGS in a Google search or something. "free game engine" and variants on that theme turn up a lot of interesting items on Google.
I'm sure I ran across AGS, said to myself, "Ooh, adventure games!", saw how small AGS was and DL'ed it. Then I got involved in my Star Wars fan film and a copy of AGS--still compressed and untouched--sat on my hard drive for about two years.
I ran across it a month or two ago, and the thought of making an adventure game just sort of ate at me until I started doing something about it, so here I am. I've been thinking about a project to do once the fan film is finished anyway and it fit nicely into a game format, so...