Firefox uses the registered domain to sort entries in the Download Manager. ====DOM Storage Manager and Permissions==== Firefox sets quotas in the DOM Storage Manager, and sets other site-based permissions, based on registered domain. ====Miscellaneous==== * In login prompts, the displayed domain name is stripped back to the registered domain. * It is possible to configure Firefox such that whether a Referer is sent can depend on whether the two sites are in the same registered domain.* Providers are distinguished from each other in the Social API via registered domain.
===To Be Investigated===
* DOM Storage quotas?
* Chrome restricts shared workers to registered domains (inc. private domains). Does Firefox?