thanks for your feedback on Google Fonts. If you wish to avoid annoying the others in the forum, we could continue per PM.
So you're selling your entire families per GF? I guess you don't have commercial "Pro" versions, then? May I ask how much you got for, say, the Cabin family? Do you get to see your font in action when they're being used? Do you have any commercial fonts that might have benefited from the "exposure" from your free fonts?
Sorry if I'm asking too many questions; feel free to disregard any and all of them. ;o)