Login model

[asantos]

Im not new to web dev, but i have a some-kind-of basic question here.

Of this two alternatives, which one do you think would be the best choice for a frontend login system (in this case is an agenda online service):

A) Logging with USERNAME and some pwd
B) Logging with EMAIL and some pwd

I would really appreaciate arguments in the response.

Thanks in advance.

[mack]

My preference it towards having a username and password. If a user chooses a name they want to use they can stick with it, but a lot of people change email addresses quite a lot.

Mack.

[asantos]

Good point.