I was wondering about that myself... how fine is the powder? As a metal artist, it's been drilled into my head to exercise extreme caution with all silica containing products. Silicosis scares me.
However, I'm super intrigued. I bought some clay a year or two ago based on the thread here. I, um, never tried it. I wonder if it goes bad? Hmm. My DH and I both have different but definite digestive annoyances we'd love to solve.
I'm like child-sized tho - seriously... 80 lbs... so you think I could get away with trying a small dose? Things skeeve me out easily, and I have a sensitive tummy.