[Matt_Cutts]

That's true. There's actually four ways to verify a site (meta tag, upload a file, DNS, or Google Analytics): http://support.google.com/webmasters/bin/answer.py?hl=en&...

Lots of people use the meta tag method though.

[garazy]

Hi Matt,

The site won't show those that aren't doing non-meta ways so I suspect the actual registration would be higher than this. Although you can see the actual trending at http://trends.builtwith.com/Web-Master/Google-Webmaster