Currently, the only way to get feedback regarding a false positive URL is to spend a lot of time interacting by email with representatives. It is helpful in specific cases, but most of the time not necessary.
In general, when I have spotted a false positive URL through Google Safe Browsing, I am simply interested in knowing when F-Secure will unlock the website I want to visit.
Therefore, what about providing in your "sample report" interface a way to simply report things quickly (as it is the case now) AND let the reporting person know when the false positive has been treated by sending an automated email to its address?
Right now, either I submit something and have to keep track of your progress on my own, checking the website from time to time, hoping that this will get solved at some point in the future, or I spend lots of time writing emails...
What do you think? Thanks in advance for your help.