Control of Size of Facebook comment box {JFBCComments} ?

miamiman,
Very sorry for the delayed response.

Unfortunately, there isn't a way to set the number in a %. That width value is passed along to Facebook, and they only accept a pixel value. We wish they had an option for % as well, but they don't.

Hope that helps, even if it's not really what you were looking to hear.

Thanks,
Alex