A worldofme was a device used by the Celestis to protect themselves with an infinite number of copies.
A worldofme consisted of a hyperlink to an artificial universe entirely populated by continually-updated back-up versions of the user. Should a Lord of the Celestis die in the material universe, the worldofme updated a copy of them in the exact time and place. They could then prevent themselves from dying with the endless copies of themselves. However, the final copy that survived remembered each and every death, which could be obviously distressing. Worldofmes were even used as a military device, as seen with the attack on the City of the Saved. (PROSE: The Book of the War)