Shared universe settings on the Internet include or have included Superguy, the Legion of Net.Heroes, Undocumented Features, alt.pub.havens-rest, alt.pub.dragons-inn, Robotech: The Misfold, and many others.

Shared universes may be used for original settings or fan fiction, and may be private or open to the public. At their best, they can become a social activity for the participants, with associated mailing lists and chatrooms where editors and writers may meet and spend hours discussing story ideas or simply shooting the breeze.