You posted in just the right place, Kak. KR is so full of information that it takes a while to learn your way around. You can always use the search (at the top of each page) if you want to see if a topic has been discussed in the past.
I have already bought one of these and find it useful and compact. I really like to use colorwheels to help me pick colors that work together; because I have knitting stuff in so many places, it seems I can always use one more "tool" that I can lay my hands on right where I am. This grid also fits into my purse!
Donna, with intentions always bigger than her available time. (OkieDokieKnitter on Ravelry)