You can contact us at IRC. It is preferred that you contact us that way, as it allows you to talk to all available staff members. If you want to contact a single person, or prefer not to use IRC, please send a PM or post on the Tiberian Technologies forums.
We have two IRC servers running, that are used for communicating with each other. We have two channels dedicated to TT: one private channel for staff members to discuss functionality and progress, and one public channel that anyone can talk in. Joining the public channel is a great way to learn to know the people that are active in TT.
Our public IRC channel is named #tt and is hosted on irc.tiberiantechnologies.org. The same channel can be accessed from both irc.n00bstories.com and irc.blackintel.org, if you are already connected to one of those networks.