OK so I created a niche blog a few years ago, then recently I created an Android app using all the content from the blog. The blog gets about 300 hits a day but only makes pennies in ads. In the one week the app has been available, I've already made more from the few app sales (with no promotion) than I have from ads on my blog over the last 3 months! Also, the competition for my app has sold 1000-5000 at five times the price of my app, so I know my app has way more potential than my blog. My question is: should I kill the blog and just replace it with a page promoting the app? Otherwise why would someone pay money for an app when they can get all the same content for free on my blog? Maybe I'm being paranoid, but I'm worried that if I kill off the blog I'm going to piss off a lot of people and am worried they'll write nasty reviews on my app... What would you recommend?