Only 3 things with my real name. An art sales site, a photo site with pictures of such items (hard to avoid if it's what you sold under....) and one picture, for being in an event organizing committee many years ago. Oh, and probably a fossilized FB from that fiasco of trying to accommodate people. Nothing there. I hate them and very much regret having even ventured there.
That's it.

I run fairly paranoid.

Anywhere else it's screen name and different in each place. Even with my ghostly internet presence, I've run into what you say, pirilin. And it's for here. It's really weird to look something up and see your stuff among the top hits(!) Of all the people in the world(!) Yikes.

It does let you know here that material is available to the search engines. From the FAQ:
"Do search engines index the forums?
Yes, we allow search engines to index our community, to help others find emotional and mental health support online. We explicitly suggest members choose a username upon registration that is not used elsewhere online, to help with your online privacy."

Though I err on the side of caution, I still do get paranoid over it once in awhile, I'm usually pretty ok with my Mystery Level. You may not know WHO I am, but you can rest assured that I'm exactly what I say.