One thing we have considered is that you could get a Hubski subscription, which will make the site ad-free, or you can use it freely, but see ads. Even so, I can tell you that if we have ads, they will not move, and they will not be obnoxious. Something like the ads on The Deck network, and example of which can be seen on Daring Fireball. But there are other models that I am willing to entertain. Penny Arcade is trying something interesting. Personally, I have strong feelings about advertising. I also have strong feelings about the purpose of Hubski. If anyone has ideas regarding ads, or alternatives, I am always keen to hear them.
Right now we are focused on making Hubski a great place. Someday, we will likely focus on a revenue model. It's inevitable and we have some cool ideas but it's not coming any time soon. That said, any ideas are always welcomed.