[Design] Cosmo signup: tell users why email required

[Matthew Eernisse]

+1 on telling the user that the e-mail address will actually be used for 
something when we have account activation turned on.

Brian Moseley wrote:
> we also need to improve the clarity of our error reporting on the
> signup page. rather than sticking some random poorly worded message up
> at the top of the form where it's not immediately noticeable, we
> should put clear, detailed feedback right at the problem where the
> error has occurred. 

In the signup page at least, there are very specific errors that show in 
red, directly over the form input, explaining exactly what the problem 
is -- for example, "This field requires a minimum length. (3)," "This 
field must match Password field," or "This field must be a valid e-mail 
address."

What random, poorly worded message are you referring to? The min. length 
prompt is oddly worded, but I don't think it's particuarly unclear.

We have an open bug (7907) for improving error messages in the UI in 
general. It's currently classified as an enhancement, but it could 
potentially be bumped up in priority.

> we should also state our expectations for syntax,
> length etc next to every field in the form when it's first rendered.

Adding the requirements such as minimum length or 'must be valid e-mail 
address' up-front is an excellent idea.


M.