VoiSmart Social Chat от Flavio Grossi, Пользователь Firefox 12794442

Keeps track of user activity to sync VoiSmart Social Chat presence status.

This extension monitors the operating system idle state to properly set the chat presence indicator of your user.

It automatically sets your chat state to away when no activity is detected for a (configurable) amount of time and switches it back to online when your user interacts again with any application.