Correlation between “Like” and “Pin it”

Does anyone see much difference between the “Pin this” button and the “like” button?

Essentially the end result is the same: User interest in a particular product is being sold to ad companies so that the ad they show you will actually be relevant. I’m fascinated about the idea that gave birth to Pinterest. Do you think that someone said “Facebook does nothing visually pleasing with the “likes” they gather from all those like buttons out on the web. They just sit, statically on someone’s profile. Let’s make a community based pinboard based around those “likes”, call then “pins” and put “pin it” buttons out all over the internet.

Thoughts?