Which platform do you use for personal branding?

Please tell me why in your replies. Would love to hear any tips. Since 2016 I've been using Medium to reflect on my career path, share learnings and mark major career milestones. It's been a great way to expand my network and increase my career capital. I also copy these over to LinkedIn where I have far more followers and connections. I enjoy writing so it's a fun and valuable way for me to work on my personal brand. I also use Twitter for meeting new folks but I prefer creating long form text versus threads. Tell me about you!