Log in to the Tumblr dashboard. Open a new browser tab, then type the following URL in the address bar, substituting “MyTag” for the tag you want to track. Use hyphens between multiple words in your URL tag. http://www.tumblr.com/tagged/MyTag The page displaying the tagged results opens in your dashboard. Click the “Track This Tag” link in the right sidebar of the tagged results page. The new tag entry is added to your Tracked Tags list. Press the “Tab” key while viewing your Tumblr dashboard to display your Tracked Tag list in a pop-up box. Click any tracked tag to open the tagged results page. To post a link to one of your tracked tags, type “http://MyBlog.tumblr.com/tagged/tracked-tag" and change “MyBlog” to the name of your blog and “tracked-tag” to the selected tag. You can also open a tagged results page for a tag by clicking the hyperlinked tag in any post.
