I was actually just talking about this yesterday!
That schedule I'd read about was the Überman schedule, where you sleep 20-30 minutes six times a day. Definitely a much more extreme form than most polyphasic sleep schedules. :)
I read a series of blog posts about it, probably around the same time as you did, and found them again [1] last night. I didn't actually read through it again, but if anyone's interested in reading more about someone's firsthand experience with it, could be a good classic read.