A much cooler way to say internet, just like saying Canadia instead of Canada. Even if you mean to use it as singular, you must have an "s" at the end of it.
There are so manyads on the intranets, it looks like Times Square
(pl.) Intranet: A closed form of the internet common in workplaces and education centres; essentially a LAN with limited access to internet pages stored on a local database.
Something PresidentPush hears rumors on. It is suspected that these internets are hidden from the rest of the world, cause we can only find one so far.
"I hear that there are rumors on the...uh...internets..." -Bush
An intranet is a restricted-access or internal network that works like the Internet. It enables employees or those with access to browse or share resources.