I think it's a positive good that the Internet allows me to hear about the private lives of people who are otherwise (and may forever be) strangers to me. If for example I was struggling with depression or alcoholism or some other issue that I didn't want known to the public, it might help me to read blogs by other people who are dealing with the same problems. In order for such communication to happen, though, people need to feel free to publish private stuff anonymously and rely on a social norm that discourages potential employers from snooping.

But it didn't stop being your personal life.

I didn't publish it. I merely shared it with friends. The publishing was simply a side effect (the information society equivalent of pollution, as Bruce Schneier puts it).

You go to church without wearing a disguise - that doesn't allow somebody to not hire you because of it.