Hiding under our beds and covering our ears is not exactly what I had in mind.
It might be much wiser to just be real quiet, listen very carefully, and sharpen our knives. I suspect ETI is doing the same thing, and that's why we've heard nothing from him. If you'd like a more detailed look at some of my views on this subject, please consult
http://seti.sentry.net/archive/public/2006/May/0020.html
Incidentally, the Universe is probably big enough that if we don't want to be found, we probably won't be. In fact, as I point out in the article, the Universe is so big (and so old)that there's a good chance that even if we want to be found, we won't.