Comment by julienb_sea

This whole concept seems overdramatic to me at least at present. Banks are making lending decisions based on steady income and payment history, not your online persona. Similarly for employment. If you have reasonable qualifications, you will have no trouble finding work, regardless of how "optimal" your persona is.

Advertising is the area in which the most persona research and targeting is implemented. I suspect the reason no one is trying to fake online personas is because it would only have noticeable impact on what ads you see.