This doesn't solve the problem for me. With some bank/credit card sites my username is "username". Others require a number and hence it's "username1" or "user

This doesn't solve the problem for me. With some bank/credit card sites my username is "username". Others require a number and hence it's "username1" or "username!4". When I get rejected upon login it would be nice to know if I need to cycle through usernames or passwords.