I think just a banner advert at the top of the page, like CoinMarketCap has, would bring in lots of revenue. Those of us that don't want to see it can use an add blocker. Some people will say that makes steemit like Facebook but I disagree. The problem with Facebook is that they use our data and they can censor or make us see whatever they want. They don't reward their content creators in the same way steemit does. Steemit needs to be sustainable and even if its just a temporary measure, some advertising should achieve that.