Why Can't Facebook Likes Be Transferred Across Domains?

With the increasing popularity of the Facebook like button, many sites are trying to make sure their sites are configured properly for the Facebook Open Graph, in order to show up in search results and to increase overall site traffic. However, in contrast to site links which can be redirected with 301 redirects, there’s no way to transfer likes to another website. Instead, when a company decides to switch domains, all the likes that that site has built up over time are immediately erased.