Bukkit

/serverevents reload - reload data from server_events.xml without having to restart server. Requires serverevents.reload permission.
/serverevents register - register with your Twitter account (this is an alternate method to doing it by executing the JAR outside of CraftBukkit). Requires serverevents.register permission.

Registration process now outputs the initial authorization URL to the file "/plugins/serverevents/twitter_key_info.txt". Once you have entered the appropriate PIN to complete the process, it will also output a completed twitter entry to the same file above, which can be copied over into your server_events.xml file.
This is mainly to help facilitate going through Twitter registration as a player in-game, though running it through the server console is recommended. After completing registration and updating your server_events.xml file accordingly, you can of course then use /serverevents reload to get the Twitter integration up and running.