Comment by fsk

My attitude is that, if they're going to close a question as offtopic, then put it in your robots.txt for Google to exclude that page.

Why is StackOverflow polluting Google with content its moderators deem "not appropriate for the website"?

Do you realize how many times I've had a question, googled it, and the #1 result was "StackOverflow - offtopic, closed"?