I could be off on what you are getting at here, but unless you eat organically the majority of the food you eat is going to be some sort of GMO. Monsanto and DuPont both are very involved in genetically modifying crops, corn especially.
I mean... its not like they are putting genes in the genome of the corn so that it glows in the dark or something ridiculous like that. Its as simple as finding a gene that kills roundworms and putting that in all of their corn, or finding corn that is resistant to roundup or liberty.
I don't feel as if there is any problem with this, and like someone said earlier, if you are starving, food is food. I'm sure somewhere down the line genetically modified food is going to be linked to causing cancer in humans, but what hasn't been linked to cancer?