Facebook launched the “Send” button on Monday as a companion to it’s “Like” button. While the Like Button allows users to share contents with all of their friends, the Send Button allows them to send a private message to just a few friends.
When you click on Send button, a pop-up appears, allowing you to send that article or page to friends, groups or any email address. You can then add a message and send the page to friends’ inboxes or post it to a Group wall. And since Send includes the ability to share articles via email, the classic “email to a friend” functionality available on millions of websites will become obsolete.
The button is designed to make it easier for users to share content with close groups of friends, Facebook product manager Austin Haugen explained to Mashable. He cited an increasingly popular trend: users posting a commerce site to a Group to figure out what gift to buy for a friend. Another important detail: Send counts toward the total number of Likes a page has. The Like total is now calculated by adding the number of Likes, shares, comments and inbox messages containing a URL.
The Send button’s code is also now available on Facebook’s Developer Website. Link