One Line, Many Problems
How many grammar and spelling errors can you pack into one field label? Well, if you’re Nicole Fields Photography, you can work in at least one of each:
The label Who can I thank for the refferal? misspells referral, of course, but also uses who as the direct object, and we all know that should be whom.
There’s a reason for the difference, boys and girls: because the proper use makes the meaning clear.