ONE WORD – GOOGLE.
Lets face it 99% of people you talk to use Google to search for items online. If you own a website then you owe it to yourself to start using Google’s “Webmaster Tools” . If you did not build your own website, then make sure the person who did is using and understands the importance of Webmaster Tools. Bing also has a similar type dashboard, but in my humble opinion it is not as good and their search engine can’t compete.