Q:

Accessing superuser.com/users/flag-weight/ results in error

When I try to access https://superuser.com/users/flag-weight/dragonlord I get a 500 eror.  However,  accessing https://superuser.com/users/flag-weight/73918 does not. 
Can this be handled more gracefully, such as attempting to looking up the correct user ID?

A:

How is this a bug? User names aren't unique. I could change my name to "DragonLord" right now.

