I never tried it because I was on Windows at the time but I remember my brother raving about it constantly, that I had to try it etc (and reading other people saying the same thing).

I think he's still using it. He probably would have paid something for it.

But then overnight they just weren't interested on building it. So strange.

Right! So many people would have actually paid for Arc to keep active development going, but without even giving that option they switched to Dia...