In real life, I'm all over the Internet. My name is rather unique and most all of the google results for my name are actually me.
The others are a school teacher on the east coast who is the only other person I've found that shares my first and last name. (We also share a rewards club membership at Best Buy because every time one of us tries to get a new one, they say we already have one. We keep in touch via email and it's one of the oddest online friendships I've ever made online.)
I do google myself often and spend a fair bit of time on a regular basis working on my SEO. Because so much of my business depends on the Internet, I do have to be more careful these days about what I do online using my real name. In the past, I haven't worried too much about it and there was a point where googling (well, yahooing back then) my name showed everything from leather community stuff to work stuff. I've gotten most of it cleaned up but after the first 3 or 4 pages there is some non real estate stuff that still shows up. For most of the social stuff I do, I've either set things to the highest privacy levels so they don't show up in search results or I've completely changed the names that I use. Since I expect, and often request, that my clients google me at some point, I have to make sure that they only see what I want them to see.
I participate in some "high risk" activities online. Primarily this is related to gaming so I'm on constant alert for everything from viruses to keyloggers and other types of malware. I probably worry more about this than anything else when it comes to the stuff I do online. I would be very sad if my little pink haired gnome got hacked!