I’m committed to keeping the quicksy.im XMPP server running for at least 24 months.
XMPP servers are extremely efficient. I’m serving the ~1500 concurrent users from a toaster, so the cost of running the server itself was never an issue.

Users are however advised to eventually migrate to the app Conversations by backing up the account in Quicksy and importing it into Conversations (write down the Quicksy password beforehand).