If you have the Facebook Like Box on your website, pay attention:
With the release of Graph API v2.3., the Like Box, a version of the Like Button for Facebook Pages that embeds a feed of content from a Page into a website, is being deprecated and will stop working on June 23, 2015.
Facebook is recommending that you switch to the new Page Plugin instead. The Page Plugin lets you easily embed and promote any Facebook Page on your website. Just like on Facebook, your visitors can like and share the Page without having to leave your site.
While the standard configuration of the Page Plugin includes only the header and a cover photo, which is ideal for promoting your Page in a small space, such as the top of a sidebar, you can customize it.
Here are the Page Plugin customizations available and the examples provided by Facebook:
You can customize the width and height of the embed so it fits the size of the content area on your website appropriately (Minimum width is 280px, Minimum height is 130px). If you don’t want to show the cover image, you can hide it.
You can choose whether or not to show friends’ faces who have liked the page.
You can choose whether you want to show Page timeline posts or not.
Sidenote: The Activity Feed, Recommendations Feed, and Facepile are also being deprecated and will stop working on June 23, 2015.