Verify Your Blog for Google Webmaster Tools
To fully manage your site inside Google Webmaster Tools, you’ll need to verify that you own the site. Google offers several ways to do this. The easiest with WordPress may be to add your Google Analytics code to your site either within your theme (if supported) or with a Google Analytics plugin.
The next way is to add a custom Google DNS record. This requires that you understand how to add a CNAME or TXT record at your domain registrar or DNS host.