Like button option missing

I just installed Jetpack on my blog EverythingNonfiction.com. I liked some of the features and also liked that I could eliminate some other plugins with just this one plugin. At least that’s the theory.

So I’m going through the different options and I watch the video of sharedaddy and I see an option on the video where I can include a like button. That’s cool. I’ll add that. But when I go to my settings page there is no checkbox for this option.

You give the option of using sharedaddy on posts and pages, but what if I don’t want it showing up on my pages? How much harder would it have been to have an option of posts only?

Thanks,
Emilio