I’m not sure about public online presence beyond my LinkedIn profile, my Github repo and my Instagram feed. I’m comfortable with those being views onto my life and work that are visible to the world. In my TextTelevision days I maintained a Wordpress blog and then a Tumblr site. Personally I liked Googles Plus with its notion of circles of sharing - as an aside, seems very much the direction FB is moving these days w Groups - but its gone now. I did download and archive my feed .