OK, here is a web site giving information on straight, cross and bias grain of fabric.
http://www.suite101.com/blog/cdmwrit...nd-fabric-bias
Really good explanations. I myself usually cut WOF, because like many others I cannot afford to buy 3 yards of extra fabric just to cut straight grain borders. I have never had a problem with the nice fabric we have access to stretching in a WOF cut. I don't pull hard, and am careful when pinning and sewing a border on.
Recently I heard a group of quilters lamenting.."Why can't we just go back to making quilts?" I agree. All this agonizing over what is "right" and what is not. Whew!! Let's quilt!!!
No one needs to think they have to ONLY cut straight of grain borders..its expensive and not really necessary..... unless it's a quilt for a judged show. Then, yes. Do it.