Thanks for the discussion so far. We have some good ideas being floated around here.
I am assembling the suggestions internally here at Motortopia so we can discuss them all in-house. There is lots to think about here.
One thing that is clear, the people who don't want to participate in challenges can opt-out of being challenge currently (although we can make this process easier, and perhaps the default) but what they CANNOT do right now is opt-out of getting a bunch of emails every day from people asking them to vote for them in a challenge.
Obviously, we can't control what people type in private messages, but maybe we can make it clear, on the page where you compose a private message, that bugging members for challenge votes is frowned upon, and people's messaging ability and/or account on Motortopia could be removed for doing that.
Also, we have added the "report as spam" link on private messages recently, I think a lot of people would consider people asking for challenge votes to be "spam" so if we got several spam reports in about a person asking for votes, we could contact that person and tell them to stop.
Anyway, that is just an aspect of challenges that I hadn't thought about before.
Like I said, we are taking ALL the ideas right now, and discussing them internally. Once we pick out which ones we think will work, we can discuss them further with those who want to help refine the ideas.
A Porsche will get you through periods of no women better than a woman will get you through periods of no Porsches. - somebody really wise.