Do we need a "Want" button on Facebook? The social network company is testing that button to allow you to mark products you're interested in, instead of just liking posts.

Inside Facebook reports that developer Tom Waddington discovered the button in the Facebook Javascript SDK. It's not listed on Facebook's developer page, but he managed to get the button to render on his blog. It's not been activated yet though.

[Tom Waddington via Inside Facebook]