There is one little problem, however.
We know, at this moment that there is possibility to opt-in to the politics and religion serious debate.
New users, or users that do not follow Mobilerad as keenly as we do, they have no idea that there is possibility to opt in into this kind of discussion.
At minimum, you should ask new user when he registers whether [s]he wants to see this kind of discussion.
For existing users the situation is different. Perhaps you should send a private message or a visitor message to everybody informing them about change.
I would hazard a guess that most people wouldn't be interested, but still ...