I think this is an incredibly important aspect of the labeling issue. Regardless of what side you're on, what goes on the label matters. It needs to be scientifically accurate, easy to understand and, perhaps most importantly, NOT misleading.
I particularly liked this point by the FDA:
“An example of a statement in food labeling that may be false or misleading could be the statement “None of the ingredients in this food is genetically engineered” on a food where some of the ingredients are incapable of being produced through genetic engineering (e.g., salt)”.
Yes! This gets me every time. Seeing "no GMO" on products for which a genetic engineered version doesn't even exist.
...Makes as much sense as saying something like, a certain brand of computer is certified to not strangle you in your sleep. Doesn't it make you wonder if there are computers out there that will strangle you? (There aren't. So why label it unnecessarily?)