I found it through the WU Ingame Browser. I had tried a whole bunch of other ones (like Mythmoor) but settled upon Sklo after running barefoot for 45 minutes - through desert, steppe, hills, and mountains.
I chose "something else" because my vote really falls into multiple categories.
When I was getting nostalgic for Wurm and started looking into playing through Wurm Unlimited, I was looking on Wurm-unlimited.com for servers with the most players since if there weren't people to talk to, I might as well play a solo server. Initially I was focused on North American based servers to reduce ping time, but I couldn't find one that really hooked me.
While poking around the internet, I stumbled on Stargrace's blog with a bunch of Wurm Unlimited articles. She talked about Sklotopolis. I gave the server another look on both Wurm-unlimited.com and on the official Wurm forums. I also looked through the forums here.
Things looked good between the sources, so I logged in.
Wurm is not a game, it is a way of life. Now get off my lawn! *shakes cane*
Me, Badgirl and Izukana are playing on Wyvern and Izukana says i'm gonna go check out this Sklotopolis place. Me and Bg are all like don't you dare, last time you did this on Minecraft the server folded the next day.... Well you can guess what happened lol the very next day Wyvern folded. So we followed Izukana here and loved it so much we stayed.