Attribute an Idea to another user Merged

Why is it useful, who would benefit from it, how should it work?

Obviously I want my end-users and stake holders to submit ideas through the portal or through the ideas portal e-mail address.

The reality is that this doesn't always happen. But I still want the originator of the idea to get credit in Aha and to get the feedback messages. 

With this in mind it would be great if the entry screen had an "On Behalf Of" field where I can type in an e-mail address or select an existing user.

A follow-up to this would be the ability for me to forward and e-mail that I get from a user and have the Ideas Portal parse out the original "From" user and add that person in the On Behalf of field.