Hi Sail,
Nice post! I really like how you listed your existing PLNs in two categories;
For face-to-face strategy, I think it’s a very direct way to find the same interests or learn from each other from friends around you, which is very rewarding.
For articles, blogs and reports, when reading the content of these platforms, absorbing knowledge can also output values, as you said, most blog forums will have discussion boards, different readers will have different views opinions, when readers gather together because of the article, they can discuss different issues so as to develop their own PLNs.