More and more, we need to take responsibility for our own learning and development, and Harold has summarized it in the Seek-Sense-Share paradigm. PKM has certainly helped me structure my personal professional learning, and therefore I warmly recommend it.
I have also started relating PKM to designing an intranet, for example via this presentation at the Intranätverk conference in Malmö 2014. It is a start, and in no way finished. But half-baked ideas like this might lead to something productive in the end.