As commenters on the blog post were quick to point out, however, the statistics provided by the Ubuntu creator might not tell the whole story. One noted that the free CentOS version of RHEL is still far more popular than Ubuntu, for instance. Shuttleworth then countered by arguing that Debian - currently the top Linux distribution on web servers - should be counted as part of the Ubuntu "ecosystem," putting it back in front.
Regardless, the trends appear to be positive for Ubuntu - w3techs.com's numbers clearly show public web service numbers on the rise, from around 13 million in March 2011 to more than 18 million at present.
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