A French-based startup has just launched a website that will let you add your skills to a comprehensive map of human skills. As quoted from their website "We aim to build the largest, most accurate, multilingual skills database ever made, by allowing a diverse and skillful community to contribute their individual skills to the global map." The ontology is simple: skills can have zero or more sub-skills. Every new skill is available in all supported languages (only English and French at the moment). The crowdsourced data is free for non-commercial use."

http://en.skill-project.org/skills/