Before understanding the best option, you should examine your user base a little more. 10K a day sure, but what's the breakdown? Do you have 2K that visit the

Before understanding the best option, you should examine your user base a little more. 10K a day sure, but what's the breakdown? Do you have 2K that visit the site 5 times a day, every day? That lends itself well to the subscription model. Are most of your visitors in and outs from google, with no recurring vistis? Ads might be the better option here. Are most of your visits coming from .edu domains? There may be an opportunity for school sponsorship here. Etc, etc. You need to fit your monetization model to your particular user base.