Google recently updated Google Webmaster Tools with an all new keyword tool. Just like before, you get a list of your most prevalent keywords on your site except now you get additional information like the significants of the keywords and where the top 10 pages that the keyword can be found on.
Just click the Keywords link under “Your web site on the web” in youraccount. You will see a list of keywords just as before, except now a new significance column is also displayed. Click any of your keywords to see how many times they occur on your entire site and the top ten pages they occur on.
One great use of this feature is to help find out if your website has been hacked, and if so, where the affected pages are.
Usually when a spammer hacks your website they will load your site up with random keywords related to what they are trying to sell. Then they will link to the hacked pages from other pages on other websites they have hacked. With this new keyword tool you can not only discover whether or not your site has been hacked (loaded with spam keywords), but you can now see exactly which pages have been affected.
The above method is used commonly on sites with community driven resources such as forums, blogs, or other social networking scripts. Always make sure this has not happened with your site with this new Keywords Tool. If it has, this is something you need to fix ASAP because it may get your banned from Google and other search engines.