The term "internets" was used by George W. Bush
to correctly refer to the two existing internets: internet
and internet2. Internet2 is used by educational institutions for high-bandwith data transfers where as the first internet -- the one usually used by the average person -- is best-known for its hypertext protocol.
Ignorant media made fun of Bush for using the plural of internet not realizing that the joke was on them. They should have done more research by visiting www.internet2.org