I have left my tumblr interface almost default for a long time because I did not have much interest and fun on Tumblr. For my business demands, I changed the design of my tumblr blog page and added Like Button of Facebook in it.

For adding Like Button to each entry of Tumblr, "url" of og tag has not be set in head tag. It disturbs Like action for each entry. And "Send" fanction does not work correctly in each entry (I guess it is because of XFBML).