Reeder, a stylish Google Reader client for Mac, makes it easy to quickly “like” Tumblr posts and get back to skimming articles.
While viewing an article in Reeder’s Classic view (with a reading pane on the right), open the Tumblr page by either pressing ’v’ on the keyboard, clicking the title of the article, or performing a three finger swipe to the right on a multitouch trackpad.
The article will load in Reeder’s built-in browser as if you visited it in a stand-alone browser. Clicking the heart icon on a Tumblr post will “like” the post, close the website, and bring you back to the article view in Reeder.