DigitalOcean is an American virtual private server provider based in New York City. The company leases capacity from existing datacenters, including sites in New York, Amsterdam, San Francisco, London and Singapore.
At some point you may want to run your own Federated Wiki site, or perhaps set one up for friends or a class. We've had good luck installing on Digital Ocean, which currently offers very cheap hosting and a much simpler setup than services such as Amazon Web Services.