Keyboard shortcuts for repetitive tasks. [Space] to heart a post, [Shift+space] to scan for flagged posts.
One day Tumblr lost its mind (corporations can do that!) and flagged a giant percentage of our posts as "adult content." We built this custom Chrome extension to do two important things: it allows you to automatically scroll through your Tumblr feed until it detects the next incorrectly flagged item, which saves both hours and carpal tunnel syndrome. It will also remove hidden posts well beyond the scroll view from the page while it works, thereby freeing up memory for further scrolling. It also develops a mechanism for skipping ahead in the list of posts to recover from interruptions from Tumblr itself (Tumblr loves to freeze up on its own with an "Ah snap" apology, leaving you in limbo unless you've already armed yourself against them).
Oh, and while you scroll through your Tumblr dash normally, you can hit the space bar to heart the posts as you go by.