From its Properties in the services.msc snap-in: Discovers networked devices and services that use the SSDP discovery protocol, such as UPnP devices. Also announces SSDP devices and services running on the local computer. If this service is stopped, SSDP-based devices will not be discovered. If this service is disabled, any services that explicitly depend on it will fail to start.
Darr247
I'm surprised Microsoft doesn't shutdown the blackviper.com site since it seems to be wholesale copyright violation.
http://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol