Well, the FSF has approved the WTFPL as compatible with the GPL. [1] Certainly that doesn't mean it's been as vetted as the other licenses, but it counts for so

Well, the FSF has approved the WTFPL as compatible with the GPL. [1] Certainly that doesn't mean it's been as vetted as the other licenses, but it counts for something IMO. [1] - http://www.gnu.org/licenses/license-list.html#WTFPL http://www.gnu.org/licenses/license-list.html#WTFPL