On Feb 11, 2008 8:57 PM, Brion Vibber brion@wikimedia.org wrote:
It probably would be cleaner to set the default limit by group membership or permission key, since there's not necessarily anything unique or special about id 1, and have the explicit user blacklist be by username only for easier management.
Since someone with merge rights is not unlikely to have rename rights as well, allowing usernames to be used for the blacklist at all seems fairly insecure, unless a similar option is added to Renameuser.