You can think of Elliquiy as having its own flat in a very expensive condo complex. It is on what is called a 'virtual private server', which is like having your own server, but you actually share certain critical resources with others, just as how in an apartment complex you share resources, but have your own bed, kitchen, etc. And can generally do what you want, but if you play the music too loud there's going to be a problem.
Previously, Elliquiy was on a shared host - basically like sharing a house with about two dozen others, and we were the biggest.
World Enough and Time, In the Dark and other forums that you usually find are often on massively resold hosts - you share a mansion with hundreds of individuals.
Eventually, Elliquiy is going to need its own house - a dedicated server. It might be possible for me to skip to a mansion from the vps, or even multiple homes or mansions (heh). Depending on if I can optimize things okay - there is a lot more I can still do and I can still purchase a bigger complex in the condo, here.
It just takes time. Right now... we have a situation where Elliquiy is doing something that SMF was never, is not, and probably never will be designed to cope with - four hundred thousand private messages, so pms are probably going to be the most frustrating bit.