nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Website using the £ symbol on their website - meaning it may accept payment in this British currency.
Website using the ¥ symbol on their website - meaning it may accept payment in this South Korean currency.
Sites who has this tag are verfied by google to use WebMaster tools
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.