I find that Most are Empty and Barren, and the few that have a couple of homes on them are abandoned. I Never see the guilds who supposedly use them, use them.
Ashen Lepus' Haven World is on Nox at the south of Wabbit Island. Our guild uses and updates our HW often. We're quite proud of how much we've advanced it.
I don't know everyone's location off the top of my head but I know for a fact other active guilds on Nox use and love their haven worlds. Rare Hunters and Lovelace have large evolved HWs that they use. Craftsmen and Tranquility's HW's I've also seen and know they use them. Spanish Inquisition I know uses theirs for mob farming. Weegee I know is working on updating theirs. I forget the guild, but the one on Monk Island has their Riktus dungeon open for public use. There are a handful more that I've seen and the people who work on them take a lot of pride in it (they are a lot of work!).
I agree though about inactive guilds and haven worlds. There really should be inactivity timers for members in guilds, for guilds themselves, and for undeveloped Haven Worlds to go back on market.
Edit: Check out that Nox HW thread, some kind player has listed all the Haven World's by advancement, it paints a pretty clear picture of who uses theirs n.n
This post has been edited by cbunny - November 11, 2014, 22:28:31.