Managing your digital identity

The last exam I passed some days ago focussed on the issue of digital identity. Some people obviously consider that googling a job applicant is an infringement of privacy. Putting all your stuff online, even private data (such like photos of your last party or of your baby) is seen as potentially dangerous. However, I think that is issue raised here is not the right one and has to be transposed : putting all your life online is not dangerous if you know ho to manage your digital identity.