WP Facebook Like 1.5.1 has now been released, containing two new features among other bugfixes. It is now possible to disable the like button by creating a custom setting for that specific post or page and setting wpfblike to false.
The other feature is the inclusion of the new Send button available from Facebook. When enabling this new button in the settings, it will show you a new button alongside the old Like button.
This new button makes it easy to privately share content to friends and family without having to post it on your public wall for everyone to see.