Re: Webmaster Tools verification

Posted by Hugo <Nabble> on Oct 28, 2010; 3:54pm
URL: https://support.nabble.com/Webmaster-Tools-verification-tp5678749p5683170.html

That field is used to upload a sitemap, which is a set of XML files that describe your URLs. Read more:
http://en.wikipedia.org/wiki/Sitemaps

I don't think you should worry about that, mainly because google has been crawling your website without problems.