It looks like brands with highly desirable products may soon have a new way to promote their wares on Facebook, and it won’t cost them an extra dime.

According to a find by Tom Waddington, Facebook is testing a “Want” button. The plugin would apparently work in the same way as the “like” button on sites.

Here’s an example of the Facebook Want button. Currently, publishing want actions is disabled, though the button does render.

Although the functionality for a “want” button plugin exists, Inside Facebook points out that there’s no trace of any sort of “Want” plugin on Facebook’s master list of social pluginswant?

Waddington actually has the “Want” button up and running on his site, but clicking on it currently displays an error.