This is actually a great block for groups to make. My on-line charity group made them for a retreat and they all went together beautifully and they made over 75 quilts in a weekend! This designer said she used EQ originally and just called it a Three-Patch Quick Block:
http://www.straw.com/equilters/libra...ick-quilt.html
Here she shows lots of layout alternatives (scroll down and see the designs):
http://www.straw.com/equilters/libra...quilttops.html