On Everything 2, a "token" is a small, mysterious object which can be traded in at the E2 Gift Shop for the right to reset the chatterbox topic.
Tokens can be acquired by various means including purchasing them at the gift shop using GP, or winning them at the Wheel of Surprise. Tokens are also sometimes awarded as prizes for taking part in special quests or contests.
Although only users of the requisite level can purchase tokens on their own at the E2 Gift Shop, any registered E2 user can use a token to reset the topic, if they can somehow acquire one.