Legends of Terris is a MUD which had been on AOL dating back to the mid-90s, and is still active and being played online (legendsofterris.com).
Wikipedia used to have a page listing for Legends of Terris with plenty of information. Soon after, much of the information was cleared out, due to it "not being from a reliable source." Soon after that, the page was deleted, due to not being "important enough," or something to that effect.
Yes, my username here (and most every place I've registered for anything over the past decade) is based on Terris. No, I don't run Terris, nor am I involved in its administration. I've just been playing it for the past decade plus, and love it very much. And no, I'm not involved enough in Wikipedia to go through the effort of trying to jump through their hoops in order to try to get the page back up or anything like that.
Seeing what Wikipedia did to the Legends of Terris page, while plenty of pages that seem extremely irrelevant with hardly any sources, or sources from random people, has been plenty of reason for me to not rely on Wikipedia for anything.