It currently only supports a single pre-configured server. I think ideally it should have a select box of servers at the top, and the option to specify another server. It should be smart enough to figure out from the url (ie http://confluence.atlassian.com) the path to the remote API (/remote/xml-rpc). The select box could perhaps be a combination of pre-configured servers (properties file?) and previous servers (the last X servers used are stored in the user's preferences?)