To anyone who is trying to make money with Tumblr blogs, a tip a few of you might have missed

Tumblr blogs are by default set to use the default mobile theme, which will not have any of your html code for ads or google analytics or whatever. Therefore, nobody visiting your site on mobile will see any of your ads, and the majority of tumblr's traffic is mobile. You are missing out on lots of views, and a lot of ad revenue. To change this, go in and edit your theme.

Go into advanced options at the bottom, and unckeck the option for "use default mobile theme", and mobile users will now see the page the same way everyone else does. Please note that this will not affect anyone using the tumblr app to view your page, they still will not see ads.