The utility of a consistent username across sites that have them visible (usernames are obviously more useful at flickr than at your bank, outside of ease of re

The utility of a consistent username across sites that have them visible (usernames are obviously more useful at flickr than at your bank, outside of ease of remembering) is mitigated by content aggregation sites like friendfeed. Once I've added a service to my "Me" listing at friendfeed, it becomes authenticated to my identity, no matter what the exact username is.