Logic (from the Greek logos, which has a variety of meanings including word, thought, idea, argument, account, reason or principle) is the study of reasoning, or the study of the principles and criteria of valid inference and demonstration.
Go to Google Trends (see resources below). Google Trends is a great way to find most popular searched words on Google. It lists the top 100 searched words and is frequently updated throughout the day. You can click on any of the search words and find out more information about it. Go to Yahoo Buzz.
In fact, the most popular searches are a lot more basic. The clear winner around the world is facebook, which is funny given that you could just as easily type facebook.com into a URL bar. google and youtube are also popular and likewise amusing.