Great idea and good initiative LoyceV, but what worries me a bit is that you will start to get so much email requests for whitelisting that you won't have enough time to answer and reply everyone who sent them.
There's probably more than enough users already offering their time to whitelist, and we could potentially setup a forwarding system for any unanswered cases. However, I doubt that this will be overly popular, since the only exposure is this thread. Unless, theymos has changed the evil score message to reflect that you can request manual whitelisting, I don't think its going to be overly used.
For the record, I've had zero emails for whitelisting currently.