According to Google, how does their crawler interpret the rel="nofollow" tag?

Which of these will show a schedule of flights from Atlanta to Boston?

Which of the following correct searches is the simplest way to find both 2004 and 2005 results?

Google search does not index some common words (such as "or", "and", "when", and "in") within the webpage. What are these common words called?

What is the difference between strict and moderate filtering?

Which of the following methods can help you get around the Google Sandbox?

What does it mean when a link in the results area is indented?

What is the name of the filter that blocks/limits objectionable content?

What is the symbol to find similar search terms?

Which of the following would exclude .doc files from this search's results?

How can you limit your search to only U.S.-accredited higher educational institutions?