Shodan Computer Search Engine

<a href="http://twitter.com/hdmoore/statuses/6009657364" rel="nofollow">http://twitter.com/hdmoore/statuses/6009657364</a> -&#62; <a href="http://shodan.surtri.com/?q=port%3A23+%22list+of+built-in+commands%22" rel="nofollow">http://shodan.surtri.com/?q=port%3A23+%22list+of+built-in+co...</a>

wait, this can't be right... <a href="http://shodan.surtri.com/?q=google+lighttpd+php" rel="nofollow">http://shodan.surtri.com/?q=google+lighttpd+php</a>

Apparently nginx is popular in Germany: <a href="http://shodan.surtri.com/?q=nginx" rel="nofollow">http://shodan.surtri.com/?q=nginx</a> . Any ideas why?