"After storming into the survey last month, this month sees QQ
gain a further 8.9 million sites. QQ now hosts nearly 29 million
Qzone sites under the qzone.qq.com domain, all of which are served
by its own QZHTTP server. Little is known about this server,
although people have noticed a similarity that suggests QZHTTP may
be a customised version of thttpd.
"Although it is generally uncommon for websites to use fake
Server headers, there are some cases that stand out more than
others. One relatively prevalent example is ZX_Spectrum/1997
(Sinclair_BASIC), which is used by a Russian company to serve 0.02%
of the world's websites. The ZX Spectrum was an 8-bit personal home
computer released in 1982, but it was discontinued two years before
the World Wide Web even existed."