I don't think most people are as unique and findable as they think and most other people are not paying all that much attention to begin with. For example, I am not particularly unique and I don't think I would recognize even a close friend of mine who was posting anonymously unless they did something wildly identifying like giving their name, location, and date of birth. I found, reading thread dating back a few years, that people seem to fall into categories but other than that are not all that distinguishable from others in that category.