Yup, the whole point of putting a `Like` button your page is so that site visitors can broadcast your page to their friends. However, to cause that broadcast to

Yup, the whole point of putting a `Like` button your page is so that site visitors can broadcast your page to their friends. However, to cause that broadcast to actually occur you have to put a bunch of Open Graph meta tags on your page and also (I think?) have a registered Facebook Application to go along with your site. There's no place that's documented except for the developer forums.