I find the term offensive, and despite the fact that I have a POTTY MOUTH, I take offense any time I hear the words "G*D Damn" together. I can handle words like "shit" and "fuck"...but not G*d Damn. Weird, don't you think?

Personally I've never used the term GDI. When referring to a non-Greek, I've always just used 'non-Greek.'