An E/N site : Everything Nothing site
Learned this from JeremyFriesen, who had pointed to a reference. (Archived reference page: https://archive.is/Ka0xR)
Here are some excerpts for posterity and my own reference:
The website's content means everything to the publisher, but it could mean nothing to the rest of the world.
Back in the 1990s and maybe even in the early aughts, some websites were called E/N sites, which meant Everything and Nothing. E/N may have predated the term "weblog", which also began in the 1990s and was later shortened to "blog".
E/N description: The website's author covers a myriad of topics. It's not narrowly focused. The author writes about everything or at least everything that's important to the author. The site might contain something useful for anyone who visits. The content means everything to the publisher, but it could mean nothing to the rest of the world.
Related : PublishingOnline