The converse can also be said. Out of the four jobs that I have had since graduating only one I have not been head hunted for (the second oddly). This was mostly because who work at the new company knew me, my character and ability. I hope that people will actually look at my linkedin profile as this is just an internet based extension of this.
On the other side of the argument thinking that people will not search for you during periods of employment is also a bit naïve. At job number two I was working closely with a social inept network admin, I was supposed to present to senior management internet monitoring data for him. It turns out that one of my colleagues was a model in a former life and one of the company's owners would regularly look for photos of her on his work computer. It wasn't included in the report and it was not nice a thing to have to carry round with me.
If two submarines crash in the ocean, and neither is running sonar, does it make a sound?
yes. it sounds like "crunch" followed by "oh, shit".
and "Oh, Merde!".
So you think that money is the root of all evil. Have you ever asked what is the root of money? -- Ayn Rand