I would consider being an online ghost as a great compliment with how everything has been lately. There is way too much public information being pumped out for no reason at all.
This was my sentiment while reading the article. Two years ago I went through a process of completely stripping away my online presence. I'm now unsearchable by name, name and company, name and home town. The author's reasons for having an online presence don't appeal to me personally. I can practise skills that I will find useful and I can learn, all without publishing evidence of it online.
Also, have you considered going a "middle path" where you are searchable but no info comes up besides your name and face? With how things seem to be evolving I lean torwards a "grey man" strategy because some day you will be suspicious by not being searchable online. At least that's what I kinda fear.