I’ve never felt the need to follow this particular piece of advice. However, I’ve dabbled. I’ve joined various social media sites, and enjoyed some of them to some degree. So it could be quite useful to experiment.
You can share your photographs. You can recommend books for other to read. You can ‘pin’ topics of interest for other people to enjoy. You can talk about the trials and tribulations of going barefoot. You may comment—or even ‘troll’—on YouTube if you wish.
It can be quite addictive to follow the discussion threads that capture your attention. And it should be possible to do that in another language too, I imagine. Doing so online would afford you the anonymity that is preferable, I feel, for learners of the language concerned.