If you’re copying and pasting your resume to a job site, you must use an ASCII or plain text format.  If you try to copy and paste a MS Word doc, the reader will have nothing but a jumbled mess of words and funny symbols.

And don’t try to simply save a formatted MS Word version in text. You must clean it up and test it in Notepad. Try to lay out the very plain document to make it as aesthetically pleasing and easy to read as possible.