The chat works like IM in Gmail. You can type messages to your contacts and groups directly from Translator Toolkit regarding questions you may have about a translation issue.
If you're not interested in using chat, you can turn it off in the Translator Toolkit settings.
Introducing SES Online
Want to view one of the sessions you missed or listen to an especially informative presenter a second time? SES New York sessions are available for purchase on ClickZ Academy's new e-Learning site. SES is now Online!