For your convenience, I uploaded the matrix, in this presentation form, to slideshare. You can download the presentation from there and feel free to re-use and re-purpose it. I'd love to know how you might adapt it and use it in a way that fits your purposes, so please keep me informed.
The Most Practical Social Media Presentation You'll Find For Free!
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I found inspiration in the ongoing work of Beth Kanter, the consistent use of matrix grids by Jeremiah Owyang, and a conversation with my friend, Lance Bauslaugh.