Rumors say that beside the very successful LIKE button Facebook is about to introduce a new button called WANT. It is obvious that LIKE button has totally changed the online interactions all over the world. Before, if you liked something you had to comment. It was slow and time consuming. Typing at least a short sentence, managing the captcha, signing in etc.
Nowadays majority of websites inserted the like button into their pages and with one single click you gave an obvious feedback (I like it) plus you have shared that content on your facebook which might make a post viral.
WANT button is based on a similar concept. It will be useful mostly for companies with products or services especially if they have online stores. They will be able to insert a WANT button beside their items and when people will click on it that item will be shown on their Facebook wall.
The online store will get publicity (most likely Facebook will monetize this option), Facebook will gather again a lot of information about its users commercial preferences and habits, and it will be easier to buy Christmas or Birthday presents if you simple check what your friends or family members WANTed on Facebook before.
I guess this button will have a future and a next step toward a fully commercial Facebook.