WordPress Update AvailableNovember 15, 2011
Dear site owner or webmaster of http://sigma.me/,
As of the last crawl of your website, you appear to be running WordPress 3.1.4. Google recommends that you update to the latest release. Older or unpatched software may be vulnerable to hacking or malware that can hurt your users. To download the latest release, visit the WordPress download page. If you have already updated to the latest version of WordPress, please disregard this message.
If you have any additional questions about why you are receiving this message, Google has provided more background information in a blog post about this subject.
Google Search Quality Team