Wikipedia uses Sun equipment
We announced in the press release “Wikimedia Selects Sun Microsystems to Enhance Multimedia Experience for Expanding User-Base Worldwide and Accommodate Explosive Growth of Rich Content”(who uses such fscking long headlines ?!? ;) ), that the Wikipedia will use Sun hardware and software for it´s service:
The Wikimedia Foundation, the non-profit organization that operates Wikipedia and other free-content projects, announced today that it has selected Sun Microsystems, Inc. (NASDAQ:JAVA) [...] to help it build a secure and scalable open source web infrastructure using Sun Fire(TM) x4500 and x4150 servers and Sun StorageTek(TM) storage arrays.
By implementing Sun's open source MySQL(TM) database and Sun Open Storage infrastructure, we are in a position to create a better and faster user experience.